Review Request: 8009614 nsk/split_verifier/stress/ifelse/ifelse002_30 fails with 'assert((size & (granularity - 1)) == 0) failed: size not aligned to os::vm_allocation_granularity()

[Zhengyu Gu]

A simple fix to align up virtual memory allocation size to os defined 
granularity.

Bug: https://jbs.oracle.com/bugs/browse/JDK-8009614
Webrev: http://cr.openjdk.java.net/~zgu/8009614/webrev.00/

Test:
   - Test case: nsk.split_verifier.stress.ifelse002_30.ifelse002
   - JPRT


Thanks,

-Zhengyu