diff --git a/lib/spack/docs/conf.py b/lib/spack/docs/conf.py
index cea0b04793c982920e65e2cf4fddbd854d55a6eb..700cb00299302c865c7ad9f1c26acc3ce31f013f 100644
--- a/lib/spack/docs/conf.py
+++ b/lib/spack/docs/conf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/docs/exts/sphinxcontrib/__init__.py b/lib/spack/docs/exts/sphinxcontrib/__init__.py
index da0488bb3c9d6b6dd464cd0fac356de06801ee0c..838d616eb463d65c8135befd3d0ee7cdca857f7c 100644
--- a/lib/spack/docs/exts/sphinxcontrib/__init__.py
+++ b/lib/spack/docs/exts/sphinxcontrib/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/docs/exts/sphinxcontrib/programoutput.py b/lib/spack/docs/exts/sphinxcontrib/programoutput.py
index 12d8e5a3c5c8abb3ec372316e9b7bd4bef1bef1a..ff006acf72c0c3b6a938b77923b3a1da1452ebc8 100644
--- a/lib/spack/docs/exts/sphinxcontrib/programoutput.py
+++ b/lib/spack/docs/exts/sphinxcontrib/programoutput.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/__init__.py b/lib/spack/spack/__init__.py
index e33bcdb98b53090446972a932e09499f10b0add5..911309fed35a8061a7cbcde0e134f00e1c09405c 100644
--- a/lib/spack/spack/__init__.py
+++ b/lib/spack/spack/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/architecture.py b/lib/spack/spack/architecture.py
index 63034ddea259ad01c6f6a4fd8ca6ee3fcf0539d5..92e4b2742d19fd79111a1a9664b9cc26e8e83786 100644
--- a/lib/spack/spack/architecture.py
+++ b/lib/spack/spack/architecture.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/__init__.py b/lib/spack/spack/cmd/__init__.py
index b51c67a8604b299381a10b39999e88a4aeb3e70e..bfd69bbe56c5c5e4034d423e942573d0415d7aad 100644
--- a/lib/spack/spack/cmd/__init__.py
+++ b/lib/spack/spack/cmd/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/arch.py b/lib/spack/spack/cmd/arch.py
index 56897bcb7a868c1c63981c8363581c94814b10e9..aeb2ba3ff85930f4a939ce4d5e6d77177401ae68 100644
--- a/lib/spack/spack/cmd/arch.py
+++ b/lib/spack/spack/cmd/arch.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/bootstrap.py b/lib/spack/spack/cmd/bootstrap.py
index f2cf387f2337ee09781b01c28e6086e941f4d33b..381f4c717cf799c2e543ae004c0d149def76049b 100644
--- a/lib/spack/spack/cmd/bootstrap.py
+++ b/lib/spack/spack/cmd/bootstrap.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/checksum.py b/lib/spack/spack/cmd/checksum.py
index af304a4f1e79954ff3c76dbedbe4b11fb2efe0a1..86bbd901343f6258ea9bd5bfc4a39e6883169566 100644
--- a/lib/spack/spack/cmd/checksum.py
+++ b/lib/spack/spack/cmd/checksum.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/clean.py b/lib/spack/spack/cmd/clean.py
index 2ceea59a872058b3a41c2f818616f099f54aa926..d74c5252c8eaa4b4c4063fd8905ee1825106676a 100644
--- a/lib/spack/spack/cmd/clean.py
+++ b/lib/spack/spack/cmd/clean.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/compilers.py b/lib/spack/spack/cmd/compilers.py
index d07349ca5d1db4d946240a701f2b2b26b3a30c82..8b1fb4d03ac6a484ceb2fda8735c61689d1eb2c0 100644
--- a/lib/spack/spack/cmd/compilers.py
+++ b/lib/spack/spack/cmd/compilers.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/create.py b/lib/spack/spack/cmd/create.py
index 2ef8df4f01189a69068a4c18caef7add9af92565..ed454887bf6d7631cd3d0951f07532f975f5805b 100644
--- a/lib/spack/spack/cmd/create.py
+++ b/lib/spack/spack/cmd/create.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/doc.py b/lib/spack/spack/cmd/doc.py
index a5d8b4ad0097484d19b876292b224b2686817d70..601ae26e5edeb4ed9731304f345aa23880e37d08 100644
--- a/lib/spack/spack/cmd/doc.py
+++ b/lib/spack/spack/cmd/doc.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/edit.py b/lib/spack/spack/cmd/edit.py
index 9cb6695ab5f863780cf16f4dafa3d5913062d589..b04899ad846dfde25b5c7523348b254396ee7793 100644
--- a/lib/spack/spack/cmd/edit.py
+++ b/lib/spack/spack/cmd/edit.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/fetch.py b/lib/spack/spack/cmd/fetch.py
index 0e3b3b577d2f8e29eb4a7e32944eb4c5909d3112..86bc9cdef375ed206557255d4bdc9353c9cd7987 100644
--- a/lib/spack/spack/cmd/fetch.py
+++ b/lib/spack/spack/cmd/fetch.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/find.py b/lib/spack/spack/cmd/find.py
index 2c628c6a56390495e7ceed29072a16c0edb93066..95abbb72bda384f11332a81cd6f9f0b107630d69 100644
--- a/lib/spack/spack/cmd/find.py
+++ b/lib/spack/spack/cmd/find.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/graph.py b/lib/spack/spack/cmd/graph.py
index 1b93fa8f4e5463bf8997b23baf26c578fd19b09a..07fe67ca4bf9726c857adafc3e4fb08ef1ac0999 100644
--- a/lib/spack/spack/cmd/graph.py
+++ b/lib/spack/spack/cmd/graph.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/help.py b/lib/spack/spack/cmd/help.py
index 0b108f929666b8405cf0137bcac6339357e282b6..eae3aabd972ead138e39fd3fbbcc2e7b15b534f3 100644
--- a/lib/spack/spack/cmd/help.py
+++ b/lib/spack/spack/cmd/help.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/info.py b/lib/spack/spack/cmd/info.py
index d6c5c2c062143d6d586a307eb1c18fe0de214c4d..b4d9a8339dbc2ae02f5ecdfc06105430873c647f 100644
--- a/lib/spack/spack/cmd/info.py
+++ b/lib/spack/spack/cmd/info.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/install.py b/lib/spack/spack/cmd/install.py
index c14543b0cee6646b6f32ef99fbe6df6be49a2ccf..f80baf0ad641e7ffc742232c9a72ea0d3f431e1b 100644
--- a/lib/spack/spack/cmd/install.py
+++ b/lib/spack/spack/cmd/install.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/list.py b/lib/spack/spack/cmd/list.py
index 2b16921d4fbf989bbb37b84225a6726875a1c318..2cfdd9863d93e561b60031f0ba0398072afb6267 100644
--- a/lib/spack/spack/cmd/list.py
+++ b/lib/spack/spack/cmd/list.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -34,4 +34,3 @@ def setup_parser(subparser):
 def list(parser, args):
     # Print all the package names in columns
     colify(packages.all_package_names())
-
diff --git a/lib/spack/spack/cmd/providers.py b/lib/spack/spack/cmd/providers.py
index 700c27f233aa5e4c225e3b71b174a86649d20ac2..dc40b6b9ffa4dad312f35d35adf7c7c5a044b38c 100644
--- a/lib/spack/spack/cmd/providers.py
+++ b/lib/spack/spack/cmd/providers.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/purge.py b/lib/spack/spack/cmd/purge.py
index e73314906693a6990e0f38766e822bde4951a97c..9b96937149520c50747113eb0daf0315cdaab16e 100644
--- a/lib/spack/spack/cmd/purge.py
+++ b/lib/spack/spack/cmd/purge.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/python.py b/lib/spack/spack/cmd/python.py
index 55952fbadbabeed01d42127024f5901f61d87dfb..6dd8c324a4654e4bb825cbb45d2afb06ef7eedf9 100644
--- a/lib/spack/spack/cmd/python.py
+++ b/lib/spack/spack/cmd/python.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/spec.py b/lib/spack/spack/cmd/spec.py
index 50345d81f577aa7103118158845dd944fedf0f94..fcff743026d1af033eaa37723ae9704a711387ec 100644
--- a/lib/spack/spack/cmd/spec.py
+++ b/lib/spack/spack/cmd/spec.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/stage.py b/lib/spack/spack/cmd/stage.py
index 67f1e69b5a6327ccd9cdde58b568c1651b4c2b74..dd03114d4c9867459855b9f2901795bea3f7751b 100644
--- a/lib/spack/spack/cmd/stage.py
+++ b/lib/spack/spack/cmd/stage.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/test.py b/lib/spack/spack/cmd/test.py
index 6cf843478397f2aade35ced97837986caedaaed0..41cba4b66c5b3cc525bd39c9f8f5b680722b446b 100644
--- a/lib/spack/spack/cmd/test.py
+++ b/lib/spack/spack/cmd/test.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/uninstall.py b/lib/spack/spack/cmd/uninstall.py
index 7782ced92af80f7da674362365988f75e8471626..c30746b0d65a99a0fa7b7ff7f9ad60e574eaf938 100644
--- a/lib/spack/spack/cmd/uninstall.py
+++ b/lib/spack/spack/cmd/uninstall.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/versions.py b/lib/spack/spack/cmd/versions.py
index ebad532630596b931bc26530ae309dd03690b767..9ecb9875c20b379a7cf7a22b5f6b755c8f9a248e 100644
--- a/lib/spack/spack/cmd/versions.py
+++ b/lib/spack/spack/cmd/versions.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/colify.py b/lib/spack/spack/colify.py
index 7ec3894ef31d4ffe56e19eb436c38f4487c5552f..1f66416e69c7b7965c8f3477073d68a62af873fe 100644
--- a/lib/spack/spack/colify.py
+++ b/lib/spack/spack/colify.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/color.py b/lib/spack/spack/color.py
index 7a07ccb0d4265e7c9ddfab4e4f3287ebd2701078..df123f7eced6655b6560ca64592d6f19371e664f 100644
--- a/lib/spack/spack/color.py
+++ b/lib/spack/spack/color.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilation.py b/lib/spack/spack/compilation.py
index 28c043615e721924d93157d5ce53361c3a6c46c8..c4561a412244f11ca8d5afa2a7eef1d2af098cb7 100644
--- a/lib/spack/spack/compilation.py
+++ b/lib/spack/spack/compilation.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilers/__init__.py b/lib/spack/spack/compilers/__init__.py
index 19fef739e33939f38ff7933beda682d5bd8ffe46..369171a59b4de23c7c2a9e369f11e4406e94a054 100644
--- a/lib/spack/spack/compilers/__init__.py
+++ b/lib/spack/spack/compilers/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilers/gcc.py b/lib/spack/spack/compilers/gcc.py
index 49fa23ed6ee40e987c374f1d1451aa8468357695..073219dc20522a01b36c64b9572aa619e61d78ca 100644
--- a/lib/spack/spack/compilers/gcc.py
+++ b/lib/spack/spack/compilers/gcc.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilers/intel.py b/lib/spack/spack/compilers/intel.py
index 6cbdae2e2e7c9dadb355906c3372816c478d5515..c27fee1719874eb5b3d64f7aed6c7804ce4195c5 100644
--- a/lib/spack/spack/compilers/intel.py
+++ b/lib/spack/spack/compilers/intel.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/concretize.py b/lib/spack/spack/concretize.py
index bea859b2d08262d7598ef3cd5c3aac45b7f84c18..790d67cac835ec1087339ead88d95cbd6a72d4a0 100644
--- a/lib/spack/spack/concretize.py
+++ b/lib/spack/spack/concretize.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/directory_layout.py b/lib/spack/spack/directory_layout.py
index 11922d03361c08382e42090648c5e9ebcef68330..bc4ecf802a6c9a5ba94be975e065df070b78f999 100644
--- a/lib/spack/spack/directory_layout.py
+++ b/lib/spack/spack/directory_layout.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/error.py b/lib/spack/spack/error.py
index d527802dabfe9d09514f6ea9a766768d229ccbf8..b593ff9fc3d0d2d17e45abe144446c8d7e538fd1 100644
--- a/lib/spack/spack/error.py
+++ b/lib/spack/spack/error.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/globals.py b/lib/spack/spack/globals.py
index cdfc951ac38dbfdec3cd3c9cd6900c706b34b5b6..4da516803fd3ff75b16a1eb06f0b89f0908c600f 100644
--- a/lib/spack/spack/globals.py
+++ b/lib/spack/spack/globals.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/multimethod.py b/lib/spack/spack/multimethod.py
index c28f51002e79d1b61852a95f215b0d682372a081..710c790b63564eb505aef017dda02fdd8a6b155d 100644
--- a/lib/spack/spack/multimethod.py
+++ b/lib/spack/spack/multimethod.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/package.py b/lib/spack/spack/package.py
index 0c38b7061190df9e5b313d8b7570e75ee9678be3..2ea367fdc9dd2c3f0edde9309552cf2f24520a61 100644
--- a/lib/spack/spack/package.py
+++ b/lib/spack/spack/package.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/__init__.py b/lib/spack/spack/packages/__init__.py
index 4aba48205125210e6045a55b998b029bb0b884c1..471b48d9022dc2d97904cc1d307c1a8ea6a54cce 100644
--- a/lib/spack/spack/packages/__init__.py
+++ b/lib/spack/spack/packages/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/callpath.py b/lib/spack/spack/packages/callpath.py
index 8b4caecd2219a5fc98f1ea766744b54e673b18b1..5d92d773026f411ed3dbdda9e062937432090393 100644
--- a/lib/spack/spack/packages/callpath.py
+++ b/lib/spack/spack/packages/callpath.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/cmake.py b/lib/spack/spack/packages/cmake.py
index 7f784011596c9b4598717668dc33e081aafcf367..d4ab3402cd7c97a9c8f6efcb0448d4108259d3ab 100644
--- a/lib/spack/spack/packages/cmake.py
+++ b/lib/spack/spack/packages/cmake.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/dyninst.py b/lib/spack/spack/packages/dyninst.py
index 5a23f4e5e157345e3f360f278ecf5741bd9eaf03..2318317de5ab7f93fb36adae426116118119373c 100644
--- a/lib/spack/spack/packages/dyninst.py
+++ b/lib/spack/spack/packages/dyninst.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/libdwarf.py b/lib/spack/spack/packages/libdwarf.py
index e1ad4aaccf1fdba90129f61c9532563fe0b7d9bc..657e84705a4617c73e295fe953b09d9742293288 100644
--- a/lib/spack/spack/packages/libdwarf.py
+++ b/lib/spack/spack/packages/libdwarf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/libelf.py b/lib/spack/spack/packages/libelf.py
index c64e83d232f6fb3219ce50ef638d4a2bc22b1acc..f663ba750d6e0eeee60f828dda8203d4f2352471 100644
--- a/lib/spack/spack/packages/libelf.py
+++ b/lib/spack/spack/packages/libelf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/libunwind.py b/lib/spack/spack/packages/libunwind.py
index 9af59eb4d4f00bb7c1d29e59a7bc3b5a9aa22a71..c93b5b2c987083e42266bcde192f2bfd2fdeb8ca 100644
--- a/lib/spack/spack/packages/libunwind.py
+++ b/lib/spack/spack/packages/libunwind.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/mpich.py b/lib/spack/spack/packages/mpich.py
index 354643f6bccacebaf5c3fac68a94023f8a33d559..af9e8266dc89c40931c312b7d9c3b33e07c83d3c 100644
--- a/lib/spack/spack/packages/mpich.py
+++ b/lib/spack/spack/packages/mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/mpileaks.py b/lib/spack/spack/packages/mpileaks.py
index dcac2de9db64bb5788595e1a375367d3a32135e6..3307b9fdee839931b5d3aa55b4ff4cf6bb0b3ad2 100644
--- a/lib/spack/spack/packages/mpileaks.py
+++ b/lib/spack/spack/packages/mpileaks.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/parse.py b/lib/spack/spack/parse.py
index ed7761fb8828c04bf4754a7906da76554e443e20..bc12ec258c23cd45761b8d956c92e14e6c588efe 100644
--- a/lib/spack/spack/parse.py
+++ b/lib/spack/spack/parse.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/relations.py b/lib/spack/spack/relations.py
index dc88f2f37f39d9721634a3dd94f0b7d576f315b6..1c24db5fa6dc932431207ae66611cfce6396d97e 100644
--- a/lib/spack/spack/relations.py
+++ b/lib/spack/spack/relations.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index aa11d12a3f48cb21030f415d331a119f83c0ac1b..9fecc1a251e384ef90ca29365624670b0a7c4d72 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/stage.py b/lib/spack/spack/stage.py
index ff1efe7be6a2f9733d2d50fc1090efc8a6dcc4c8..6c303d682438d7ca11afbdeaac5b50900dbdf2c0 100644
--- a/lib/spack/spack/stage.py
+++ b/lib/spack/spack/stage.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/__init__.py b/lib/spack/spack/test/__init__.py
index ba69ec1df3fd001c2e58899c113b4a1d85074ad7..8f4015529eedc8b0792b8f1fd1fe4599c33e86fd 100644
--- a/lib/spack/spack/test/__init__.py
+++ b/lib/spack/spack/test/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/concretize.py b/lib/spack/spack/test/concretize.py
index 83d447de1afd93189bd34544c75943c6df28a10d..538c13f2cdedb4ee79855bf675f90049f917dd31 100644
--- a/lib/spack/spack/test/concretize.py
+++ b/lib/spack/spack/test/concretize.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/__init__.py b/lib/spack/spack/test/mock_packages/__init__.py
index 06656c4a75733846cc0e6c35c5c913a5fce8869b..1c388f31c5bc14a1107d793de718006d634d24ef 100644
--- a/lib/spack/spack/test/mock_packages/__init__.py
+++ b/lib/spack/spack/test/mock_packages/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/callpath.py b/lib/spack/spack/test/mock_packages/callpath.py
index c7868c88ed212cd91fdfbfbfa6308e9bfa973cdb..b4fd0f44825696924b6ff985394a44fc8e331596 100644
--- a/lib/spack/spack/test/mock_packages/callpath.py
+++ b/lib/spack/spack/test/mock_packages/callpath.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/direct_mpich.py b/lib/spack/spack/test/mock_packages/direct_mpich.py
index 372a34d319a937e78f786e946d24ce6c54a976a1..d702e4481b7272dc428021e7c5675a0fb2aa878b 100644
--- a/lib/spack/spack/test/mock_packages/direct_mpich.py
+++ b/lib/spack/spack/test/mock_packages/direct_mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/dyninst.py b/lib/spack/spack/test/mock_packages/dyninst.py
index 89bf0170058d2d108c266330f4fd9379ee15aaf3..d32c4b55043253bfa1775755509c5a7e16856284 100644
--- a/lib/spack/spack/test/mock_packages/dyninst.py
+++ b/lib/spack/spack/test/mock_packages/dyninst.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/fake.py b/lib/spack/spack/test/mock_packages/fake.py
index 0218d7d1f74ebfffe9095d9ef766ae330b58a7fa..88bc6d866950e1101eee0684ae80243c3b614df8 100644
--- a/lib/spack/spack/test/mock_packages/fake.py
+++ b/lib/spack/spack/test/mock_packages/fake.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/indirect_mpich.py b/lib/spack/spack/test/mock_packages/indirect_mpich.py
index 61707e5ccc9dfcf91fa0fb96bb4f08651f35dd77..a53cb9330c7e60bb986be1cf09904d923511bf3a 100644
--- a/lib/spack/spack/test/mock_packages/indirect_mpich.py
+++ b/lib/spack/spack/test/mock_packages/indirect_mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/libdwarf.py b/lib/spack/spack/test/mock_packages/libdwarf.py
index 502417d84302a9824f945e05722f9830df0c366b..0f4d55fd8846f4b8683ace9c577d7af3c92cb0d0 100644
--- a/lib/spack/spack/test/mock_packages/libdwarf.py
+++ b/lib/spack/spack/test/mock_packages/libdwarf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/libelf.py b/lib/spack/spack/test/mock_packages/libelf.py
index 08e6543475d655a5259656b18963bdd73a28a453..5ac07de4e3bf8cd9d61200214260f868e74d887d 100644
--- a/lib/spack/spack/test/mock_packages/libelf.py
+++ b/lib/spack/spack/test/mock_packages/libelf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/mpich.py b/lib/spack/spack/test/mock_packages/mpich.py
index 6e2ddb17c7c5581bbc6d05993db4b02bd288f450..2a8e1cebe31d714c7c77891f8a0faea69785109b 100644
--- a/lib/spack/spack/test/mock_packages/mpich.py
+++ b/lib/spack/spack/test/mock_packages/mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/mpich2.py b/lib/spack/spack/test/mock_packages/mpich2.py
index ce2dfcc63b9bcca2c0bc36b2adc5e61b26ff081d..84dce4cccb7c0b6645041506fef8ed393620b48e 100644
--- a/lib/spack/spack/test/mock_packages/mpich2.py
+++ b/lib/spack/spack/test/mock_packages/mpich2.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/mpileaks.py b/lib/spack/spack/test/mock_packages/mpileaks.py
index 68393588d48e336356190ced2da639b748f1220c..c34d5991e64c364ba413ee5f438c917f08946789 100644
--- a/lib/spack/spack/test/mock_packages/mpileaks.py
+++ b/lib/spack/spack/test/mock_packages/mpileaks.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/multimethod.py b/lib/spack/spack/test/mock_packages/multimethod.py
index d303e55ea069a140a744ec4ef679ec8add2a50f1..75b1606ffc67ef1ea7b8f7f1d60950eacd8acee9 100644
--- a/lib/spack/spack/test/mock_packages/multimethod.py
+++ b/lib/spack/spack/test/mock_packages/multimethod.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/zmpi.py b/lib/spack/spack/test/mock_packages/zmpi.py
index 467d428b0a8b85fffec665f981cee93bb2df3648..a86bd706bbf6d79082b40425d5aefc7c201d34fd 100644
--- a/lib/spack/spack/test/mock_packages/zmpi.py
+++ b/lib/spack/spack/test/mock_packages/zmpi.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages_test.py b/lib/spack/spack/test/mock_packages_test.py
index ee1e62afc592cd8d4a11e6e6fcfcb057a96d5e57..441f4b7fbed6998d9482492a912141146d6222f1 100644
--- a/lib/spack/spack/test/mock_packages_test.py
+++ b/lib/spack/spack/test/mock_packages_test.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/multimethod.py b/lib/spack/spack/test/multimethod.py
index 104e7793578ad79989b09c76c806e68d89dccf4f..79b55bf73efc95d43808f6345e6d65d2d552f030 100644
--- a/lib/spack/spack/test/multimethod.py
+++ b/lib/spack/spack/test/multimethod.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/spec_dag.py b/lib/spack/spack/test/spec_dag.py
index a6b88277cf1df922e1f3260c3644695efbf51de4..da0b878ce1c4abdb58b76edc40338e0744cefdf7 100644
--- a/lib/spack/spack/test/spec_dag.py
+++ b/lib/spack/spack/test/spec_dag.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/spec_semantics.py b/lib/spack/spack/test/spec_semantics.py
index 36a7a4a7fcc1a530e1aab11efc88abfa16df11d6..dbd04f94491f5c3e17513117bd5c1585916c1931 100644
--- a/lib/spack/spack/test/spec_semantics.py
+++ b/lib/spack/spack/test/spec_semantics.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/spec_syntax.py b/lib/spack/spack/test/spec_syntax.py
index 2d368d85692e76278f6b850cfea0d48a01faa35d..20468be1b121b20db7a3348b3a73ca0cf9b403a8 100644
--- a/lib/spack/spack/test/spec_syntax.py
+++ b/lib/spack/spack/test/spec_syntax.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/stage.py b/lib/spack/spack/test/stage.py
index 484307078122ce9d520d97780a5ae437c0485051..0b572950ad88432b01573c6c268846808e96b032 100644
--- a/lib/spack/spack/test/stage.py
+++ b/lib/spack/spack/test/stage.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/url_parse.py b/lib/spack/spack/test/url_parse.py
index 0b94f4665de0e565eb56131b4c659e05f5c5d470..f02bb720756ae63803dca964f48ca43de9c021dc 100644
--- a/lib/spack/spack/test/url_parse.py
+++ b/lib/spack/spack/test/url_parse.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/versions.py b/lib/spack/spack/test/versions.py
index 2ea1bbe9d29536e78ab40c07df5d871d97fce573..37fd28a8e738069948e5103a11d7038c443aae9b 100644
--- a/lib/spack/spack/test/versions.py
+++ b/lib/spack/spack/test/versions.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/tty.py b/lib/spack/spack/tty.py
index a38e97fc7cdeffacc8f24c3343bfbf970a205f9f..757e4cc602c38364211ddd866095506e96d3cfe7 100644
--- a/lib/spack/spack/tty.py
+++ b/lib/spack/spack/tty.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/url.py b/lib/spack/spack/url.py
index 3250632eefc4658d903e87af952519e5a9243f1d..8e4f39899dbe8b2546ee385a75c6aefcfa75b938 100644
--- a/lib/spack/spack/url.py
+++ b/lib/spack/spack/url.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/__init__.py b/lib/spack/spack/util/__init__.py
index 06656c4a75733846cc0e6c35c5c913a5fce8869b..1c388f31c5bc14a1107d793de718006d634d24ef 100644
--- a/lib/spack/spack/util/__init__.py
+++ b/lib/spack/spack/util/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/compression.py b/lib/spack/spack/util/compression.py
index 59620dbe3723a24c5fdf399cc28fc5352ea52db9..ca98160bdd549b2a1b6492ebb252d41a408ca488 100644
--- a/lib/spack/spack/util/compression.py
+++ b/lib/spack/spack/util/compression.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/crypto.py b/lib/spack/spack/util/crypto.py
index 066589bb8b757c4047cfb96ec915d8fd5ff40d4f..4d8681bed95e3a91dac1140912b39977a1e9736f 100644
--- a/lib/spack/spack/util/crypto.py
+++ b/lib/spack/spack/util/crypto.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -102,4 +102,3 @@ def check(self, filename):
         self.sum = checksum(
             self.hash_fun, filename, block_size=self.block_size)
         return self.sum == self.hexdigest
-
diff --git a/lib/spack/spack/util/environment.py b/lib/spack/spack/util/environment.py
index 06750e9f354eceb2164d44647ba7ea84bb745d35..435d91218536099e57c251c54069920dae7e532f 100644
--- a/lib/spack/spack/util/environment.py
+++ b/lib/spack/spack/util/environment.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/executable.py b/lib/spack/spack/util/executable.py
index 1b159f34eb342739026c5f6661415151e88053fb..58c70ed28cc812a50f0826654fb6b3dc696f230a 100644
--- a/lib/spack/spack/util/executable.py
+++ b/lib/spack/spack/util/executable.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/filesystem.py b/lib/spack/spack/util/filesystem.py
index ad0151c17655d3023833ef054a12dc0b00d99ff4..d3c7b1645748c5c76f468467a9bece75884dd909 100644
--- a/lib/spack/spack/util/filesystem.py
+++ b/lib/spack/spack/util/filesystem.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -97,5 +97,3 @@ def stem(path):
 def can_access(file_name):
     """True if we have read/write access to the file."""
     return os.access(file_name, os.R_OK|os.W_OK)
-
-
diff --git a/lib/spack/spack/util/lang.py b/lib/spack/spack/util/lang.py
index eb0528bc988792b1ce95b6149097a4448d23f4e9..ba774325c8797f3361f818b6c9a7feba38e21de3 100644
--- a/lib/spack/spack/util/lang.py
+++ b/lib/spack/spack/util/lang.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/none_high.py b/lib/spack/spack/util/none_high.py
index bbd7a027733d5dad2d0a8e449372c2118910364d..78b41cbaf6c5d4613fb3ec4c9a6d158bd71cd8d9 100644
--- a/lib/spack/spack/util/none_high.py
+++ b/lib/spack/spack/util/none_high.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/none_low.py b/lib/spack/spack/util/none_low.py
index e65b97d867ec8233965c611b8aaac21debfa7437..307bcc8a26e431d2f898857e1e171e5b5d83d139 100644
--- a/lib/spack/spack/util/none_low.py
+++ b/lib/spack/spack/util/none_low.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/prefix.py b/lib/spack/spack/util/prefix.py
index 32833a3c04e42a86344656c23c4c4f3c20adc651..50347a28f7dbea22647cb934ad0e0629f061ed22 100644
--- a/lib/spack/spack/util/prefix.py
+++ b/lib/spack/spack/util/prefix.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/string.py b/lib/spack/spack/util/string.py
index df9c32857eca9ec7ee37619d6e7dc1a32b68f2b0..e7a9a6862e8c0dc7f3264fcdd318029b75d7db10 100644
--- a/lib/spack/spack/util/string.py
+++ b/lib/spack/spack/util/string.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/web.py b/lib/spack/spack/util/web.py
index 7b46fc3361ea33b3a77b700a28faa61e3a8a3337..db021cc884d6b9d992310007175e632ad4171c0c 100644
--- a/lib/spack/spack/util/web.py
+++ b/lib/spack/spack/util/web.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/validate.py b/lib/spack/spack/validate.py
index 39410f8cf03782dc4f3935b656f41fba60037970..791e26a2d703a76828904b708588ee03e98e4b92 100644
--- a/lib/spack/spack/validate.py
+++ b/lib/spack/spack/validate.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/version.py b/lib/spack/spack/version.py
index 3ccef19e4efe029a73078d9855933d85a34140d1..a99a5a7b4d051b1beba8102e70329eea00979de0 100644
--- a/lib/spack/spack/version.py
+++ b/lib/spack/spack/version.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA