ada-tree.h (TYPE_RETURN_BY_DIRECT_REF_P): Change from using TYPE_LANG_FLAG_4 to using TYPE_LANG_FLAG_0.

	* gcc-interface/ada-tree.h (TYPE_RETURN_BY_DIRECT_REF_P): Change from
	using TYPE_LANG_FLAG_4 to using TYPE_LANG_FLAG_0.
	(TYPE_ALIGN_OK): Move around.
	(TYPE_PADDING_FOR_COMPONENT): Remove superfluous parentheses.
	* gcc-interface/decl.c (change_qualified_type): Move to...
	(gnat_to_gnu_entity): Adjust comment.
	* gcc-interface/gigi.h (change_qualified_type): ...here; make inline.
	(ceil_pow2): Use ceil_log2.
	* gcc-interface/utils.c (finish_subprog_decl): Add couple of comments
	and do not set TREE_SIDE_EFFECTS.
	(handle_noreturn_attribute): Use change_qualified_type.

From-SVN: r261486