Print the PnMPI at the bottom of MPI_Init
Print the PnMPI at the bottom of MPI_Init

As some modules might never return from MPI_Init, the PnMPI banner will
be printed just after PMPI_Init has been called instead of after all
modules have been handled.

RWTH-HPC/PnMPI,RWTH-ELP/PnMPI,RWTH-ELP/PnMPI,RWTH-HPC/PnMPI,RWTH-ELP/PnMPI,RWTH-HPC/PnMPI