Multiple domains with multiple nodes

[ant elder]

Now that we've got working having multiple Nodes interacting together
in the one in-JVM "default" domain we're going to also need a way to
support multiple domains. I wondered about having the NodeFactory be
associated with a domain so you do something like:

nodeFactory = NodeFactory.newInstance(domainURI);

and then all nodes created from the factory belong to that domain.
Comments or alternative suggestions?

   ...ant