RFR: 8005646: TEST_BUG: RMI UnregisterGroup test leaves process running

[Stuart Marks]

Hi all,

Please review this fix:

     http://cr.openjdk.java.net/~smarks/reviews/8005646/webrev.0/

for this bug:

     http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8005646

Many gory details are in that bug report. TL;DR the old test jumped through 
several hoops attempting to deactivate all the activated objects, but this 
sometimes failed. The revised test uses a better deactivation technique. This 
improves the reliability of the test, and it makes unnecessary a bunch of 
infrastructure that supported the old deactivation technique.

I've also removed the RMI stubs from the checked-in sources, since they have 
been generated at runtime since Java 5.

Thanks,

s'marks