Add package for ant (#2133)

Add a package for ant, a java build tool.

var/spack/repos/builtin/packages/ant/package.py

+##############################################################################
+# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/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 Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, 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 Lesser 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
+##############################################################################
+from spack import *
+
+
+class Ant(Package):
+    """Apache Ant is a Java library and command-line tool whose mission is to
+       drive processes described in build files as targets and extension points
+       dependent upon each other
+    """
+
+    homepage = "http://ant.apache.org/"
+    url = "http://apache.claz.org/ant/source/apache-ant-1.9.7-src.tar.gz"
+
+    version('1.9.7', 'a2fd9458c76700b7be51ef12f07d4bb1')
+
+    depends_on('jdk')
+
+    def install(self, spec, prefix):
+        env['ANT_HOME'] = self.prefix
+        bash = which('bash')
+        bash('./build.sh', 'install')