ffddfc5629
keep the resulting tm_event_t that is generated because the back-end TM library actually caches a bunch of stuff on it for internal processing, and doesn't let go of it until tm_poll(). tm_event_t's are similar to (but slightly different than) MPI_Requests: you can't do a million MPI_Isend()'s on a single MPI_Request -- a) you need an array of MPI_Request's to fill and b) you need to keep them around until all the requests have completed. This commit was SVN r10820.