- Add mvapich2-allow-building-with-external-hwloc.patch (jsc#PED-2448)
  to allow building against an external hwloc library
- Build mvapich2 HPC flavors against pmix and hwloc system libraries

- add pass-correct-size-to-snprintf.patch to fix potential buffer
  overflows (required to make 'sundials' testsuite pass)
- Update to mvapich2 2.3.7
  * Features and Enhancements (since 2.3.6):
    - Added support for systems with Rockport's switchless networks
      * Added automatic architecture detection
      * Optimized performance for point-to-point operations
    - Added support for the Cray Slingshot 10 interconnect
    - Enhanced support for blocking collective offload using
      Mellanox SHARP
        * Scatter and Scatterv
    - Enhanced support for non-blocking collective offload using
      Mellanox SHARP
        * Iallreduce, Ibarrier, Ibcast, and Ireduce
  * Bug Fixes (since 2.3.6):
    - Removed several deprectated functions
      - Thanks to Honggang Li @RedHat for the report
    - Fixed a bug where tools like CMake FindMPI would not
      detect MVAPICH  when compiled without Hydra mpiexec
      - Thanks to Chris Chambreau and Adam Moody @LLNL for the report
    - Fixed compilation error when building with mpirun and without hydra
      - Thanks to James Long @University of Illinois for the report
    - Fixed issue with setting RoCE mode correctly without RDMA_CM.
      - Thanks to Nicolas Gagnon @Rockport Networks for the report
    - Fixed an issue on heterogeneous clusters where QP attributes were
      set incorrectly

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