/* COMMITTING TWICE IS NOT AN ERROR - SEE:
http://www.mpi-forum.org/docs/mpi-20-html/node50.htm#Node50
- AT MOST, UMPIRE SHOULD PROVIDE A CLEAR WARNING ABOUT MINOR
+ AT MOST, UMPIRE SHOULD PROVIDE A CLEAR WARNING ABOUT MINOR
PERFORMANCE CONSEQUENCE (JUST A WASTED FUNCTION CALL)... */
MPI_Type_commit (&newtype);