RFR: 8058475: TestCMSClassUnloadingEnabledHWM.java fails with '.*CMS Initial Mark.*' missing from stdout/stderr

[Stefan Karlsson]

Hi all,


Please review this patch to make TestCMSClassUnloadingEnabledHWM more 
stable. Instead of trying to bootstrap the initial mark with young GCs, 
just wait for the concurrent cycle to start. I've lowered some CMS 
specific flags to make this test run faster.

http://cr.openjdk.java.net/~stefank/8058475/webrev.00/

thanks,
StefanK