Minor change in how rpath is set in openmpi wrapper ldflags for Darwin.
Merge pull request #440 from hashdist/johannr/openmpi-rpath

Minor change in how rpath is set in openmpi wrapper ldflags for Darwin.
dftatom: use https

Also put the key line first.
Merge pull request #443 from hashdist/dftatom_patch

dftatom: use https
Add host-slepc package and change HOST_PETSC_ARCH for debian from linux-gnu-cxx-opt to linux-gnu-c-opt to make it work for slepc.
Merge pull request #445 from hashdist/johannr/host-slepc

Add host-slepc package
Merge remote-tracking branch 'origin/master' into stable_garnet_update
modifications required for netcdf and scipy

 -hdf5 and netcdf4 needed pic support to work with python-netcdf
 -scipy and numpy needed to link to acml for blas and lapack