we now have 12 cases to deal (4 writers and 3 readers) :
1. C `void*` is written into the attribute value, and the value is read into a C `void*` (unity)
2. C `void*` is written, Fortran `INTEGER` is read
3. C `void*` is written, Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is read
4. Fortran `INTEGER` is written, C `void*` is read
5. Fortran `INTEGER` is written, Fortran `INTEGER` is read (unity)
6. Fortran `INTEGER` is written, Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is read
7. Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is written, C `void*` is read
8. Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is written, Fortran `INTEGER` is read
9. Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is written, Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is read (unity)
10. Intrinsic is written, C `void*` is read
11. Intrinsic is written, Fortran `INTEGER` is read
12. Intrinsic is written, Fortran `INTEGER(KIND=MPI_ADDRESS_KIND)` is read
MPI-2 Fortran "integer representation" has type `INTEGER(KIND=MPI_ADDRESS_KIND)` as clarified
at https://github.com/mpiwg-rma/rma-issues/issues/1
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>