||This utility class contains the methods for broadcasting/registering changes on nodes.
||This module bootstraps and configures MMBase clustering.
||ClusterManager is a thread object that reads the receive queue
and calls the objects (listeners) who need to know.
||Main class of this class starts up a unicast sender and listener
and multicast sender and listener and connects those, effectively
allowing for one 'out lyer' server which via this small little
program connected to the local multicast network.
||A structute for basic statistical information about receiving an sending messages in the cluster.
||WaitNode is a wrapper class for MMObjectNode we want to
put into a 'waiting for a change' mode we don't block on the object
itself because we need to check its number before we nofity it again.