gcc/fortran/
* gfortran.h (gfc_set_implicit_none): Update prototype.
* symbol.c (gfc_set_implicit_none): Take and
use error location. Move diagnostic from here to ...
* decl.c (gfc_match_implicit_none): ... here. And
update call. Handle empty implicit-none-spec.
(gfc_match_implicit): Handle statement-separator ";".