Cleaned branch to only include plumed package

etc/spack/packages.yaml

-packages:
-  intelmpi:
-    paths:
-      intelmpi@4.1.0%gcc@4.4.7 arch=linux-x86_64: /software/compilers/intel/13.0/impi/4.1.0.024/intel64
-    buildable: False
-#  all:
-#    providers:
-#      mpi: [intelmpi]

var/spack/repos/builtin/packages/intelmpi/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 Intelmpi(Package):
-    """Intel MPI"""
-
-    homepage = "http://www.example.com"
-    url      = "https://software.intel.com/en-us/intel-mpi-library"
-
-    version('4.1.0')
-
-    # Provides a virtual dependency 'mpi'
-    provides('mpi')
-
-    def setup_dependent_environment(self, spack_env, run_env, dependent_spec):
-        spack_env.set('MPICC',  join_path(self.prefix.bin, 'mpicc'))
-        spack_env.set('MPICXX', join_path(self.prefix.bin, 'mpicxx'))
-        spack_env.set('MPIF77', join_path(self.prefix.bin, 'mpif77'))
-        spack_env.set('MPIF90', join_path(self.prefix.bin, 'mpif90'))
-        # NOTE: Need to find a better way of setting this compiler argument
-        # which is only required when building packages with intelmpi.
-        spack_env.set('CXXFLAGS', '-DMPICH_IGNORE_CXX_SEEK')
-
-    def setup_dependent_package(self, module, dep_spec):
-        self.spec.mpicc = join_path(self.prefix.bin, 'mpicc')
-        self.spec.mpicxx = join_path(self.prefix.bin, 'mpicxx')
-        self.spec.mpifc = join_path(self.prefix.bin, 'mpif90')
-        self.spec.mpif77 = join_path(self.prefix.bin, 'mpif77')