SYNOPSIS
        void notify_shutdown (void)

DESCRIPTION
        Notify the master about an immediate shutdown.

        If the gamedriver shuts down, this is the last function called
        before the mud shuts down the udp connections and the
        accepting socket for new players.
        The function has the opportunity to perform any cleanup
        operation, like informing the mudwho server that the mud is
        down. This can not be done when remove_player() is called
        because the udp connectivity is already gone then.

SEE ALSO
        slow_shut_down(M), remove_player(M),

