added code to MPIO_Test, so it will also free the MPI request if

it is completed.  Also set requests to MPI_REQUEST_NULL after free'ing
them.  (at pressent, MPI-IO ROMIO component does not keep lists of
requests for re-use)

This commit was SVN r634.

src/mca/mpi/io/romio/src/Makefile.am

@@ -15,7 +15,7 @@ libmca_io_romio_la_SOURCES = \
 	io_romio_module.c  \
 	io_romio.h \
 	romio_config.h  \
-	file_status.c \
+	file_request.c \
 	file_open.c \
 	file_read.c \
 	file_write.c \

src/mca/mpi/io/romio/src/file_request.c

@@ -22,6 +22,10 @@ int mca_io_romio_Test(MPI_Request *request, int *flag, MPI_Status *status){
 
     THREAD_LOCK(&mca_io_romio_mutex);
     ret=mca_io_romio_MPIO_Test(&romio_rq, flag,status);
+    if (*flag) {
+        LAM_FREE(*request);  
+        *request = MPI_REQUEST_NULL;
+    }
     THREAD_UNLOCK(&mca_io_romio_mutex);
   
     return ret;
@@ -43,6 +47,7 @@ int mca_io_romio_Wait(MPI_Request *request, MPI_Status *status){
     THREAD_UNLOCK(&mca_io_romio_mutex);
     
     LAM_FREE(*request);  
+    *request = MPI_REQUEST_NULL;
     return ret;
 }