RFR(S) : 8237798 : rewrite vmTestbase/jit/tiered from shell to java

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8237798/webrev.00
> 109 lines changed: 35 ins; 71 del; 3 mod;

Hi all,

could you please review the small patch which rewrites vmTestbase/jit/tiered from shell to java?
the only difference compared to the shell version is explicit and separate executions for +TieredCompilation and -TieredCompilation case. 

JBS: https://bugs.openjdk.java.net/browse/JDK-8237798
webrev: http://cr.openjdk.java.net/~iignatyev//8237798/webrev.00l
testing: the changed test on {linux,windows,macosx}-x64

Thanks,
-- Igor