WRT: http://jira.jboss.com/jira/browse/JBAS-5430

I've implemented a "SerializableORB" class such that we can add the ORB
to the naming environment and still serialize the environment.

https://svn.jboss.org/repos/jbossas/trunk/iiop/src/main/org/jboss/iiop/naming/SerializableORB.java

This is basically a wrapper that knows how to "readResolve" the singleton configured
on the ORBInitialContextFactory. It just delegates to the real ORB.