parser.c (cp_parser_context_free_list): New variable.

	* parser.c (cp_parser_context_free_list): New variable.
	(cp_parser_context_new): Use it.
	(cp_parser_error): Check return code from
	cp_parser_simulate_error.
	(cp_parser_simulate_error): Return a value.
	(cp_parser_id_expression): Optimize common case.
	(cp_parser_class_name): Likewise.
	(cp_parser_class_specifier): Adjust call to
	cp_parser_late_parsing_default_args.
	(cp_parser_lookup_name): Optimize common case.
	(cp_parser_late_parsing_for_member): Adjust call to
	cp_parser_late_parsing_default_args.
	(cp_parser_late_parsing_default_args): Add scope parameter.
	(cp_parser_require): Avoid creating the error message unless it's
	needed.
	(cp_parser_parse_definitely): Place free'd contexts on the free
	list.

From-SVN: r60665