/*D
   MPIX_Start_progress_thread -

Synopsis:
.vb
int MPIX_Start_progress_thread(MPIX_Stream stream)
.ve

Input Parameters:
. stream - stream object (handle)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPIX_ERR_STREAM
.N MPI_ERR_OTHER

D*/

