Request for review (xs) - 8000988

[Jon Masamitsu]

8000988: VM deadlock when running btree006 on windows-i586

http://cr.openjdk.java.net/~jmasa/8000988/webrev.00/

As part of the class data sharing re-implementation, the acquisition of 
the Heap_lock
was removed. The locking of the Heap_lock to get the GC counts was 
likely added at
that time, but the deletion of the MutexUnlocker(Heap_lock) was missed.