Make generation of addresses pluggable

Sometimes it might be desirable to provide custom addresses (classes implementing org.jgroups.Address). One example is an address which contains additional data, e.g. an attribute that's shipped around with the address.

SOLUTION: JChannel provides a setAddressGenerator(AddressGenerator). AddressGenerator has a method generateAddress(), which returns an Address.
One could create a subclass of UUID, for instance, and add a string to it, and then create an instance of this subclass in generateAddress().