Add Missing MPI_F_XXX C constants

Signed-off-by: David Wootton <dwootton@us.ibm.com>
(cherry picked from commit f27c1de)

Author: David Wootton

ompi/include/mpi.h.in

@@ -570,6 +570,14 @@ typedef MPI_Win_errhandler_function MPI_Win_errhandler_fn
 #define MPI_MAX_PSET_NAME_LEN    OPAL_MAX_PSET_NAME_LEN /* max pset name len */
 #define MPI_MAX_STRINGTAG_LEN    OPAL_MAX_STRINGTAG_LEN /* max length of string arg to comm from group funcs*/
 
+/*
+ * Constants for C code to access elements in Fortran MPI status array.
+ */
+#define MPI_F_STATUS_SIZE OMPI_FORTRAN_STATUS_SIZE    /* Size of Fortran MPI status array */
+#define MPI_F_SOURCE      0                           /* Index for MPI_SOURCE */       
+#define MPI_F_TAG         1                           /* Index for MPI_TAG */
+#define MPI_F_ERROR       2                           /* Index for MPI_ERROR */
+
 /*
  * Since these values are arbitrary to Open MPI, we might as well make
  * them the same as ROMIO for ease of mapping.  These values taken