Pull request #983: CAS-14666
Merge in CASA/casa6 from CAS-14666 to master
* commit '60b78927c52d1eba687d3c3356144255af676951':
Update casampi version to 0.5.9 to bring in additional changes that were missed in CAS-14611 PRs
increment casampi version from 0.5.6 to 0.5.8 ( support for mpi4py v4 )