/*D
   MPI_Buffer_flush - block until all messages currently in the globally shared buffer of the calling process have been transmitted

Synopsis:
.vb
int MPI_Buffer_flush(void)
.ve

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_OTHER

.seealso: MPI_Comm_flush_buffer, MPI_Session_flush_buffer
D*/

