Merge pull request #1186 from epfl-scitas/features/install_with_phases

lib/spack/llnl/util/tty/log.py

lib/spack/spack/__init__.py

lib/spack/spack/build_environment.py

lib/spack/spack/build_systems/__init__.py

lib/spack/spack/build_systems/autotools.py

lib/spack/spack/build_systems/cmake.py

lib/spack/spack/build_systems/makefile.py

lib/spack/spack/cmd/build.py

lib/spack/spack/cmd/configure.py

lib/spack/spack/cmd/create.py

lib/spack/spack/cmd/info.py

lib/spack/spack/cmd/install.py

lib/spack/spack/cmd/setup.py

lib/spack/spack/error.py

lib/spack/spack/package.py

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

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

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

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

var/spack/repos/builtin/packages/hdf5/package.py