mpich-ofi_3_2_1-gnu-hpc-3.2.1-4.25

- Remove 'BuildRequires: Modules' for HPC builds: it conflicts
  with lmod (boo#1089970).

- Fix summary in module files (bnc#1080259)

- Use macro in mpivars.(c)sh to be independent of changes to the module
  setup for the compiler (boo#1078364).

- Update to mpich 3.2.1
  - Bug fixes
  - No release notes available

- Add gcc7 as additional compiler flavor for HPC on SLES.
- Fix library package requires - use HPC macro (boo#1074890).
- Fix mpich HPC installation path in spec file.
- Fix hpc macros: add %mpich_requires.

- Add HPC specific build targets using environment modules (Fate#323977).

- Drop unnecessary dependency to xorg-x11-devel

- Add LD_LIBRARY_PATH to mpivars.sh and mpivars.csh

- Disable rpath in pkgconfig files

- Register mpich package to mpi-selector
- Remove redondant configure options already passed by %configure