Simplify MPI implementation checks.
Use MPI_DETERMINE_LIBRARY_VERSION instead of command line tools. (The command line tools used have inconsistent availability and syntax.) This allows more concise and readable version checks.
Ref #3672 (closed)
Use MPI_DETERMINE_LIBRARY_VERSION instead of command line tools. (The command line tools used have inconsistent availability and syntax.) This allows more concise and readable version checks.
Ref #3672 (closed)