* dbus/dbus-watch.c (_dbus_watch_new): handle failure to malloc
	the watch

	* dbus/dbus-server-debug-pipe.c (_dbus_transport_debug_pipe_new):
	add some missing dbus_set_result

	* bus/dispatch.c (bus_dispatch_add_connection): handle failure to
	alloc the DBusMessageHandler

	* dbus/dbus-transport.c (_dbus_transport_disconnect): don't ref
	the transport here, since we call this from the finalizer; it
	resulted in a double-finalize.

	* dbus/dbus-transport.c (_dbus_transport_disconnect): fix a bug
	where we tried to use transport->connection that was NULL,
	happened when transport was disconnected early on due to OOM

	* bus/*.c: adapt to handle OOM for watches/timeouts

	* dbus/dbus-transport-unix.c: port to handle OOM during
	watch handling

	* dbus/dbus-auth.c (_dbus_auth_get_unused_bytes): return a
	reference to unused bytes instead of a copy

	* dbus/dbus-server.c (dbus_server_handle_watch): return FALSE for
	out of memory

	* dbus/dbus-connection.c (dbus_connection_handle_watch): return
	FALSE on OOM

	* dbus/dbus-timeout.c (dbus_timeout_handle): return FALSE for out
	of memory