fortran: Add missing predefined datatype named constants.

This commit add the following Fortran named constants which are
defined in the MPI standard but are missing in Open MPI.

- `MPI_LONG_LONG` (defined as a synonym of `MPI_LONG_LONG_INT`)
- `MPI_CXX_FLOAT_COMPLEX`
- `MPI_C_BOOL`

Each needs a different solution described below.

For `MPI_LONG_LONG`:

The value of `MPI_LONG_LONG` is defined to have a same value
as `MPI_LONG_LONG_INT` because of the following reasons.

1. It is defined as a synonym of `MPI_LONG_LONG_INT` in
   the MPI standard.
2. `MPI_LONG_LONG_INT` and `MPI_LONG_LONG` has a same value
   for C in `mpi.h`.
3. `ompi_mpi_long_long` is not defined in
   `ompi/datatype/ompi_datatype_module.c`.

For `MPI_CXX_FLOAT_COMPLEX`:

Existing `MPI_CXX_COMPLEX` is replaced with `MPI_CXX_FLOAT_COMPLEX`
bacause `MPI_CXX_FLOAT_COMPLEX` is the right name defined in MPI-3.1
and `MPI_CXX_COMPLEX` is not defined in MPI-3.1 (nor older).
But for compatibility, `MPI_CXX_COMPLEX` is treated as a synonym
of `MPI_CXX_FLOAT_COMPLEX` on Open MPI.

For `MPI_C_BOOL`:

`MPI_C_BOOL` is newly added. Though the best postion of it is
the line between `MPI_OFFSET` and `MPI_C_COMPLEX`, it is put
in the last line to keep the binary compatibility of Fortran
`MPI_C_COMPLEX` between v2.0.0 and v2.0.x. This is the difference
between master and v2.x.

In addition, `MPI_CXX_COMPLEX`, which was defined only in the Open MPI
Fortran binding, is added to `mpi.h` for the C binding.

(back-ported from commit open-mpi/ompi@5383003)
(change regarding `MPI_C_COMPLEX` is excluded for the binary compatibility)

Author: kawashima-fj

ompi/datatype/ompi_datatype_module.c

@@ -536,7 +536,7 @@ int32_t ompi_datatype_init( void )
     }
 
     /*
-     * This MUST match the order of ompi/include/mpif-common.h
+     * This MUST match the order of ompi/include/mpif-values.pl
      * Any change will break binary compatibility of Fortran programs.
      */
     MOOG(datatype_null, 0);
@@ -625,6 +625,9 @@ int32_t ompi_datatype_init( void )
     /* MPI 3.0 types */
     MOOG(count, 72);
 
+    /* MPI 2.2 types (again) */
+    MOOG(c_bool, 73);
+
     /**
      * Now make sure all non-contiguous types are marked as such.
      */

ompi/include/mpi.h.in

@@ -1163,6 +1163,7 @@ OMPI_DECLSPEC extern MPI_Fint *MPI_F_STATUSES_IGNORE;
 #define MPI_C_LONG_DOUBLE_COMPLEX OMPI_PREDEFINED_GLOBAL(MPI_Datatype, ompi_mpi_c_long_double_complex)
 #endif
 #define MPI_CXX_BOOL              OMPI_PREDEFINED_GLOBAL(MPI_Datatype, ompi_mpi_cxx_bool)
+#define MPI_CXX_COMPLEX           OMPI_PREDEFINED_GLOBAL(MPI_Datatype, ompi_mpi_cxx_cplex)
 #define MPI_CXX_FLOAT_COMPLEX     OMPI_PREDEFINED_GLOBAL(MPI_Datatype, ompi_mpi_cxx_cplex)
 #define MPI_CXX_DOUBLE_COMPLEX    OMPI_PREDEFINED_GLOBAL(MPI_Datatype, ompi_mpi_cxx_dblcplex)
 #define MPI_CXX_LONG_DOUBLE_COMPLEX OMPI_PREDEFINED_GLOBAL(MPI_Datatype, ompi_mpi_cxx_ldblcplex)

ompi/include/mpif-values.pl

@@ -162,6 +162,7 @@ sub write_file {
 $handles->{MPI_LONG} = 41;
 $handles->{MPI_UNSIGNED_LONG} = 42;
 $handles->{MPI_LONG_LONG_INT} = 43;
+$handles->{MPI_LONG_LONG} = $handles->{MPI_LONG_LONG_INT};
 $handles->{MPI_UNSIGNED_LONG_LONG} = 44;
 $handles->{MPI_FLOAT} = 45;
 $handles->{MPI_DOUBLE} = 46;
@@ -173,7 +174,8 @@ sub write_file {
 $handles->{MPI_2INT} = 52;
 $handles->{MPI_SHORT_INT} = 53;
 $handles->{MPI_CXX_BOOL} = 54;
-$handles->{MPI_CXX_COMPLEX} = 55;
+$handles->{MPI_CXX_FLOAT_COMPLEX} = 55;
+$handles->{MPI_CXX_COMPLEX} = $handles->{MPI_CXX_FLOAT_COMPLEX};
 $handles->{MPI_CXX_DOUBLE_COMPLEX} = 56;
 $handles->{MPI_CXX_LONG_DOUBLE_COMPLEX} = 57;
 $handles->{MPI_INT8_T} = 58;
@@ -191,6 +193,7 @@ sub write_file {
 $handles->{MPI_C_DOUBLE_COMPLEX} = 70;
 $handles->{MPI_C_LONG_DOUBLE_COMPLEX} = 71;
 $handles->{MPI_COUNT} = 72;
+$handles->{MPI_C_BOOL} = 73;
 
 $handles->{MPI_MESSAGE_NO_PROC} = 1;