* cp-tree.h (saved_scope): Remove x_previous_class_type and
	x_previous_class_values; add x_previous_class_level.
	(previous_class_type): Remove.
	(previous_class_values): Remove.
	(previous_class_level): New macro.
	* class.c (pushclass): Restore the identifier cache more
	expeditiously.
	(invalidate_class_lookup_cache): Use vector for class_shadowed and
	previous_class_values.
	* decl.c (poplevel): Likewise.
	* name-lookup.c (cxx_binding_init): New function.
	(cxx_binding_make): Use it.
	(push_binding): For a binding in a class level, use a vector of
	cp_class_binding nodes.
	(push_binding_level): New function.
	(begin_scope): Use it.
	(leave_scope): Do not put class binding levels on the free list.
	(print_binding_level): Adjust for the fact that class_shadowed is
	a vector.
	(poplevel_class): Likewise.
	(clear_identifier_class_values): Likewise.
	(push_class_level_binding): Likewise.
	(set_class_shadows): Remove.
	(store_binding): New function.
	(store_class_bindings): New function.
	(push_to_top_level): Use store_class_bindings as appropriate.
	(pop_from_top_level): Use previous_class_level, not
	previous_class_type.
	* name-lookup.h (cp_class_binding): New type.
	(cp_binding_level): Use a vector object for class_shadowed.
	(push_binding_level): Declare.
	(set_class_shadows): Remove.

From-SVN: r84259