Remove distutils command option "--mpi-cfg",  merge its functionality in the "--mpi" one
Remove distutils command option "--mpi-cfg",  merge its functionality in the "--mpi" one
pressel/mpi4py,mpi4py/mpi4py,pressel/mpi4py,pressel/mpi4py,mpi4py/mpi4py,pressel/mpi4py,mpi4py/mpi4py