* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: During
	layout in type_annotate_only mode, skip discriminants of derived
	tagged types renaming those of the parent type.
	In type_annotate_only mode, if the type is tagged, do not override a
	size clause but take into account the alignment of the tag.
	(annotate_rep): In type_annotate_only mode, deal with  discriminants
	of derived tagged types renaming those of the parent type.

From-SVN: r231860