RFR(S): JDK-8145317 ReservedStackTest fails with ReentrantLock looks corrupted

[Frederic Parain]

Please review this small fix in ReservedStackTest test.
The test didn't exclude correctly some platforms where
the feature is not supported. The logic has been changed
to explicitly list the supported platforms.

CR: https://bugs.openjdk.java.net/browse/JDK-8145317

Webrev: http://cr.openjdk.java.net/~fparain/8145317/webrev/

Tested with JPRT, testset hotspot with aarch64 platform manually
added to the target platforms list.

Thanks,

Fred

-- 
Frederic Parain - Oracle
Grenoble Engineering Center - France
Phone: +33 4 76 18 81 17
Email: Frederic.Parain at oracle.com