new MultiRouter (allows you to fire up mutliple routers in the same JVM)

new VMCommSystem (useful for running large multirouter instances)
new MultiRouterBuilder (helper app for setting up a MultiRouter simulator)
updates to the router to handle multiple routers in the same VM, as well as
deal with the multiple OOM listener stuff
see the javadocs for info on the MultiRouter and MutliRouterBuilder
(yeah, its not ready for prime time, and its really just for the simulator,
so I'm not sure if anyone else is going to use it anyway ;)