Fix the org.jboss.test.classloader.leak.test.ClassloaderLeakUnitTestCase

Brian, did the initial analysis for the failure:

"The classloader leak test timing out is basically due to a failure; different tests in the class are all encountering the same leak and taking time trying to force a release, so it times out.

The failure is on a remote ejb2 sfsb invocation. Not sure, but think it's related to the Remoting upgrade.

I've attached a JBoss Profiler report showing refs to the leaked classloader. This one's long and complicated, but I think the relevant stuff is right at the start. The MarshalledInvocation seems to be leaking to the input stream and from there into a thread pool.

I switched my build back to Remoting 2.0.0 and the test passed."