Request for review - 8013032 - CMS: assert(used() == used_after_gc && used_after_gc <= capacity()) failed

[Jon Masamitsu]

CMS: assert(used() == used_after_gc && used_after_gc <= capacity()) 
failed: used: 0 used_after_gc: 292080 capacity: 1431699456

The assertion was incorrect so I deleted it.  The assumption that the
metrics being tested should not be affected by the reset_after_compaction()
was incorrect.

http://cr.openjdk.java.net/~jmasa/8013032/webrev.00/