decl.c (gnat_to_gnu_entity): Use pointers to dummy nodes...

decl.c (gnat_to_gnu_entity): Use pointers to dummy nodes...

	* decl.c (gnat_to_gnu_entity): Use pointers to dummy nodes, rather
	than to void, for the fields when making a new fat pointer type.
	(gnat_substitute_in_type): Now substitute_in_type.
	* gigi.h (gnat_substitute_in_type): Likewise.
	* trans.c (gnat_gimplify_expr): Remove COMPONENT_REF kludge.
	* utils.c (update_pointer_to): Update fat pointers by updating the
	dummy node pointers used for the fields.

From-SVN: r125602