RFR(trivial): 8230376: [TESTBUG] runtime/StackTrace/HiddenFrameTest.java fails with release VM

[Jie Fu]

Hi all,

JBS:    https://bugs.openjdk.java.net/browse/JDK-8230376
Webrev: http://cr.openjdk.java.net/~jiefu/8230376/webrev.00/

VM option 'ShowHiddenFrames' is diagnostic and must be enabled via 
-XX:+UnlockDiagnosticVMOptions.
Please review it.

Thanks a lot.
Best regards,
Jie