* glib/dbus-gobject.c (introspect_properties): fix the XML
	generated

	* dbus/dbus-message.c (dbus_message_unref): add an in_cache flag
	which effectively detects the use of freed messages

	* glib/dbus-gobject.c (handle_introspect): modify and return the
	reply message instead of the incoming message

	* dbus/dbus-object-tree.c (handle_default_introspect_unlocked):
	gee, maybe it should SEND THE XML instead of just making a string
	and freeing it again ;-)

	* tools/dbus-print-message.c (print_message): improve printing of
	messages

	* configure.in: add debug-glib.service to the output