set status->_ucount correctly for two-phase collective read and write operations in the module

This commit was SVN r27406.

ompi/mca/fcoll/two_phase/fcoll_two_phase_file_read_all.c

@@ -155,6 +155,10 @@ mca_fcoll_two_phase_file_read_all (mca_io_ompio_file_t *fh,
     max_data = count * datatype->super.size;
   }
 
+  if ( MPI_STATUS_IGNORE != status ) {
+    status->_ucount = max_data;
+  }
+
   if(-1 == mca_fcoll_two_phase_num_io_procs){
     ret = ompi_io_ompio_set_aggregator_props (fh, 
 					      mca_fcoll_two_phase_num_io_procs,

ompi/mca/fcoll/two_phase/fcoll_two_phase_file_write_all.c

@@ -192,6 +192,9 @@ mca_fcoll_two_phase_file_write_all (mca_io_ompio_file_t *fh,
     max_data = count * datatype->super.size;
   }
     
+  if ( MPI_STATUS_IGNORE != status ) {
+    status->_ucount = max_data;
+  }
   
     if(-1 == mca_fcoll_two_phase_num_io_procs){
       ret = ompi_io_ompio_set_aggregator_props (fh,