Merge branch 'mplegendre-multi_pkgsrc_roots' into develop

- This moves var/spack/packages to var/spack/repos/builtin/packages.

- Packages that did not exist in the source branch, or were changed in
  develop, were moved into var/spack/repos/builtin/packages as part of
  the integration.

Conflicts:
	lib/spack/spack/test/unit_install.py
	var/spack/repos/builtin/packages/clang/package.py

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

@@ -0,0 +1,83 @@
+##############################################################################
+# Copyright (c) 2013-2015, 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://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 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
+##############################################################################
+
+from spack import *
+
+
+class Metis(Package):
+    """
+    METIS is a set of serial programs for partitioning graphs, partitioning finite element meshes, and producing fill
+    reducing orderings for sparse matrices. The algorithms implemented in METIS are based on the multilevel
+    recursive-bisection, multilevel k-way, and multi-constraint partitioning schemes.
+    """
+
+    homepage = 'http://glaros.dtc.umn.edu/gkhome/metis/metis/overview'
+    url = "http://glaros.dtc.umn.edu/gkhome/fetch/sw/metis/metis-5.1.0.tar.gz"
+
+    version('5.1.0', '5465e67079419a69e0116de24fce58fe')
+
+    variant('shared', default=True, description='Enables the build of shared libraries')
+    variant('debug', default=False, description='Builds the library in debug mode')
+    variant('gdb', default=False, description='Enables gdb support')
+
+    variant('idx64', default=False, description='Use int64_t as default index type')
+    variant('double', default=False, description='Use double precision floating point types')
+
+    depends_on('cmake @2.8:')  # build-time dependency
+
+    depends_on('gdb', when='+gdb')
+
+    def install(self, spec, prefix):
+
+        options = []
+        options.extend(std_cmake_args)
+
+        build_directory = join_path(self.stage.path, 'spack-build')
+        source_directory = self.stage.source_path
+
+        options.append('-DGKLIB_PATH:PATH={metis_source}/GKlib'.format(metis_source=source_directory))
+
+        if '+shared' in spec:
+            options.append('-DSHARED:BOOL=ON')
+
+        if '+debug' in spec:
+            options.extend(['-DDEBUG:BOOL=ON',
+                            '-DCMAKE_BUILD_TYPE:STRING=Debug'])
+
+        if '+gdb' in spec:
+            options.append('-DGDB:BOOL=ON')
+
+        metis_header = join_path(source_directory, 'include', 'metis.h')
+
+        if '+idx64' in spec:
+            filter_file('IDXTYPEWIDTH 32', 'IDXTYPEWIDTH 64', metis_header)
+
+        if '+double' in spec:
+            filter_file('REALTYPEWIDTH 32', 'REALTYPEWIDTH 64', metis_header)
+
+        with working_dir(build_directory, create=True):
+            cmake(source_directory, *options)
+            make()
+            make("install")