RFR(S): 8166156: Convert test_semaphore to GTest

[Kim Barrett]

> On Nov 25, 2016, at 2:55 PM, Kirill Zhaldybin <kirill.zhaldybin at oracle.com> wrote:
> 
> Dear all,
> 
> Could you please review this fix for 8166156?
> Pretty straight-forward conversion.
> 
> WebRev: http://cr.openjdk.java.net/~kzhaldyb/webrevs/JDK-8166156/webrev.00/
> CR: https://bugs.openjdk.java.net/browse/JDK-8166156
> 
> Thank you.
> 
> Regards, Kirill

Looks good.