* objc-act.c (objc_start_class_interface,
	objc_start_category_interface, objc_start_class_implementation,
	objc_start_category_implementation, objc_build_struct,
	generate_static_references, build_private_template,
	lookup_category, objc_add_method, add_category,
	add_instance_variable, objc_is_public, conforms_to_protocol,
	start_class, continue_class, finish_class): Avoid C++ keywords.

From-SVN: r137958