Add weak symbols for the MPI-3.1 MPI_Alloc_mem_cptr fortran subroutine.

This subroutine was added in an errata to MPI-3.0; here's the MPI
Forum ticket about it:
    
    https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/390

This commit was SVN r29385.

ompi/mpi/fortran/mpif-h/alloc_mem_f.c

@@ -27,6 +27,12 @@
 #pragma weak pmpi_alloc_mem_ = ompi_alloc_mem_f
 #pragma weak pmpi_alloc_mem__ = ompi_alloc_mem_f
 
+/* Extra pragmas for the _cptr variant from MPI-3.1 */
+#pragma weak PMPI_ALLOC_MEM_CPTR = ompi_alloc_mem_f
+#pragma weak pmpi_alloc_mem_cptr = ompi_alloc_mem_f
+#pragma weak pmpi_alloc_mem_cptr_ = ompi_alloc_mem_f
+#pragma weak pmpi_alloc_mem_cptr__ = ompi_alloc_mem_f
+
 #pragma weak PMPI_Alloc_mem_f = ompi_alloc_mem_f
 #pragma weak PMPI_Alloc_mem_f08 = ompi_alloc_mem_f
 #elif OMPI_PROFILE_LAYER
@@ -45,6 +51,12 @@ OMPI_GENERATE_F77_BINDINGS (PMPI_ALLOC_MEM,
 #pragma weak mpi_alloc_mem_ = ompi_alloc_mem_f
 #pragma weak mpi_alloc_mem__ = ompi_alloc_mem_f
 
+/* Extra pragmas for the _cptr variant from MPI-3.1 */
+#pragma weak MPI_ALLOC_MEM_CPTR = ompi_alloc_mem_f
+#pragma weak mpi_alloc_mem_cptr = ompi_alloc_mem_f
+#pragma weak mpi_alloc_mem_cptr_ = ompi_alloc_mem_f
+#pragma weak mpi_alloc_mem_cptr__ = ompi_alloc_mem_f
+
 #pragma weak MPI_Alloc_mem_f = ompi_alloc_mem_f
 #pragma weak MPI_Alloc_mem_f08 = ompi_alloc_mem_f
 #endif

ompi/mpi/fortran/mpif-h/prototypes_mpi.h

@@ -88,6 +88,8 @@ PN2(void, MPI_Address, mpi_address, MPI_ADDRESS, (char *location, MPI_Fint *addr
 PN2(void, MPI_Allgather, mpi_allgather, MPI_ALLGATHER, (char *sendbuf, MPI_Fint *sendcount, MPI_Fint *sendtype, char *recvbuf, MPI_Fint *recvcount, MPI_Fint *recvtype, MPI_Fint *comm, MPI_Fint *ierr));
 PN2(void, MPI_Allgatherv, mpi_allgatherv, MPI_ALLGATHERV, (char *sendbuf, MPI_Fint *sendcount, MPI_Fint *sendtype, char *recvbuf, MPI_Fint *recvcounts, MPI_Fint *displs, MPI_Fint *recvtype, MPI_Fint *comm, MPI_Fint *ierr));
 PN2(void, MPI_Alloc_mem, mpi_alloc_mem, MPI_ALLOC_MEM, (MPI_Aint *size, MPI_Fint *info, char *baseptr, MPI_Fint *ierr));
+/* Extra Alloc_mem prototype for the _cptr variant added in MPI-3.0 errata */
+PN2(void, MPI_Alloc_mem_cptr, mpi_alloc_mem_cptr, MPI_ALLOC_MEM_CPTR, (MPI_Aint *size, MPI_Fint *info, char *baseptr, MPI_Fint *ierr));
 PN2(void, MPI_Allreduce, mpi_allreduce, MPI_ALLREDUCE, (char *sendbuf, char *recvbuf, MPI_Fint *count, MPI_Fint *datatype, MPI_Fint *op, MPI_Fint *comm, MPI_Fint *ierr));
 PN2(void, MPI_Alltoall, mpi_alltoall, MPI_ALLTOALL, (char *sendbuf, MPI_Fint *sendcount, MPI_Fint *sendtype, char *recvbuf, MPI_Fint *recvcount, MPI_Fint *recvtype, MPI_Fint *comm, MPI_Fint *ierr));
 PN2(void, MPI_Alltoallv, mpi_alltoallv, MPI_ALLTOALLV, (char *sendbuf, MPI_Fint *sendcounts, MPI_Fint *sdispls, MPI_Fint *sendtype, char *recvbuf, MPI_Fint *recvcounts, MPI_Fint *rdispls, MPI_Fint *recvtype, MPI_Fint *comm, MPI_Fint *ierr));

ompi/mpi/fortran/use-mpi-ignore-tkr/mpi-ignore-tkr-interfaces.h.in

@@ -248,6 +248,15 @@ subroutine MPI_Alloc_mem(size, info, baseptr, ierror)
   integer, intent(out) :: ierror
 end subroutine MPI_Alloc_mem
 
+subroutine MPI_Alloc_mem_cptr(size, info, baseptr, ierror)
+  use, intrinsic :: iso_c_binding, only : c_ptr
+  include 'mpif-config.h'
+  integer(kind=MPI_ADDRESS_KIND), intent(in) :: size
+  integer, intent(in) :: info
+  type(c_ptr), intent(out) :: baseptr
+  integer, intent(out) :: ierror
+end subroutine MPI_Alloc_mem_cptr
+
 end interface
 
 interface PMPI_Alloc_mem