RFR: 8016341 java/lang/ref/OOMEInReferenceHandler.java failing intermittently

[David Holmes]

This recently added test was found to fail under some conditions - 
namely client compiler with -Xcomp. It seems that the use of all local 
variables enabled the compiler to optimize things in a way that stopped 
the weakref from being enqueued as expected. Simple fix was to make the 
weakref a field.

http://cr.openjdk.java.net/~dholmes/8016341/webrev/
Thanks,
David