* cp-tree.h (struct lang_type): Add com_interface.
	(CLASSTYPE_COM_INTERFACE): New macro.
	* class.c (set_rtti_entry): COM interface classes have no RTTI
	entries in their vtables; adjust.
	(add_virtual_function, finish_base_struct, skip_rtti_stuff,
	modify_one_vtable, fixup_vtable_deltas1, override_one_vtable,
	finish_struct_1): Likewise.
	* decl2.c (mark_vtable_entries): Likewise.
	* rtti.c (build_headof, get_tinfo_fn_dynamic): Likewise.
	* search.c (get_abstract_virtuals_1, get_abstract_virtuals,
	expand_upcast_fixups): Likewise.
	* tree.c (debug_binfo): Likewise.

From-SVN: r26394