request for review (XS): 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit

[Y. S. Ramakrishna]

7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit


webrev: http://cr.openjdk.java.net/~ysr/7051430/webrev.0/

We don't really need to explicitly stop the CMS threads
because the JVM is taken down at a terminal safepoint
during which these threads are (terminally) inactive.

thanks for your review!
-- ramki