[PATCH,fortran] fix iso_c_binding only clause bug

[Tobias Burnus]

Tobias Burnus wrote:
> If you are looking for more C interoperability-related bugs:
>

And another bug:
[ISO Bind C] Accept c_f_pointer for TYPE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32627

Tobias