* class.c (invalidate_class_lookup_cache): Zero the
	previous_class_values.
	* cp-tree.h (TMPL_PARMS_DEPTH): Use TREE_INT_CST_LOW, not
	TREE_INT_CST_HIGH.
	(CLASSTYPE_TEMPLATE_LEVEL): Likewise.
	* decl.c (free_bindings): New variable.
	(push_binding): Don't create a new binding if we have one on the
	free list.
	(pop_binding): Put old bindings on the free list.
	(init_decl_processing): Use size_int, not build_int_2.
	Register free_bindings as a GC root.
	(cp_make_fname_decl): Use size_int, not build_int_2.
	(push_inline_template_parms_recursive): Likewise.
	(end_template_parm_list): Likewise.
	(for_each_tempalte_parm): Do not use walk_tree_without_duplicates.
	(tsubst_template_parms): Use size_int, not build_int_2.
	(tsubst): Likewise.
	* rtti.c (get_vmi_pseudo_type_info): Likewise.

From-SVN: r38641