[Patch, Fortran] PR40569/40568: Support intrinsic module procedures (F2008)

[Tobias Burnus]

  Tobias Burnus wrote:
>  This patch add support for compiler_version and compiler_options, 
> which are part of F2008's ISO_FORTRAN_ENV. It also moves c_sizeof into 
> the module ISO_C_BINDINGS where it belongs to (before it was a normal 
> intrinsic).
>
> Build and currently regtesting on x86-64-linux.
> OK for the trunk?

Regtesting succeeded without any failure.

Tobias