RFR: JDK-8191914: (XS): New SA test timeout on windows

[Jini George]

Hello,

Requesting reviews for a very small change to avoid the timeout of the 
recently added TestJhsdbJStackLock.java test case on windows. The change 
includes unquarantining this test on windows also.

https://bugs.openjdk.java.net/browse/JDK-8191914
Webrev: http://cr.openjdk.java.net/~jgeorge/8191914/webrev.00/

Thanks,
Jini.