Fix mpi.h so that it compiles when MP_NO_MP_WORD is defined on the command line (or prior to including mpi.h).
Fix mpi.h so that it compiles when MP_NO_MP_WORD is defined on the command
line (or prior to including mpi.h).

thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss