* dbus/dbus-transport-unix.c (unix_do_iteration): only do the
	reading/writing if read_watch != NULL or write_watch != NULL.

	* dbus/dbus-message.c (_dbus_message_loader_return_buffer): fix
	the message loader code to actually load message->header and
	message->body into the newly-created message.

	* dbus/dbus-transport-unix.c (check_write_watch): fix a mem leak
	in OOM case

	* dbus/dbus-connection.c (dbus_connection_set_max_message_size)
	(dbus_connection_get_max_message_size)
	(dbus_connection_set_max_live_messages_size)
	(dbus_connection_get_max_live_messages_size): implement some
	resource limitation functions

	* dbus/dbus-resources.c: new file implementing some of the
	resource limits stuff

	* dbus/dbus-message.c (dbus_message_iter_get_byte_array): add
	missing docs, add @todo to handle OOM etc.

	* dbus/dbus-marshal.c (_dbus_demarshal_byte_array): add missing
	docs