[mpiwg-ft] FTWG Readings Announcements

[Bland, Wesley]

Hi all,

The Fault Tolerance Working Group will be doing 2 readings at the upcoming meeting.

1. Define error/failure behavior in MPI_INIT/FINALIZE

  *   Issue - https://github.com/mpi-forum/mpi-issues/issues/102
  *   Pull Request - https://github.com/mpi-forum/mpi-standard/pull/50

This issue pulls out the definitions around error behavior for `MPI_INIT` and `MPI_FINALIZE`. This comes from #20, but is not directly related to the fault tolerance parts of that proposal.

2. Clarify what MPI_SUCCESS guarantees, and what is left undefined when MPI_ERR_XXX happens

  *   Issue - https://github.com/mpi-forum/mpi-issues/issues/119
  *   Pull Request - https://github.com/mpi-forum/mpi-standard/pull/95

Add text to clarify what is implied about the status of MPI and user visible buffers when MPI functions return `MPI_SUCCESS` or other error codes.

Thanks,
Wesley
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