RFR(T) 8241086: Test runtime/NMT/HugeArenaTracking.java is failing on 32bit Windows

[Zhengyu Gu]

Hi,

Please review this trivial patch that disables HugeArenaTracking.java 
test on 32-bit platforms. The test was meant for 64-bit, as it allocates 
2G memory, likely to run out of memory on 32-bit platforms.

Bug: https://bugs.openjdk.java.net/browse/JDK-8241086
Webrev: http://cr.openjdk.java.net/~zgu/JDK-8241086/webrev.00/

Test:
   Tested with 32-bit and 64-bit JVMs, it does not run with 32-bit JVM 
and run with 64-bit JVM.
   Submit tests in progress.

Thanks,

-Zhengyu