RFR(S) : 8178835: CTW Runner should check that all classes have been compiled

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8178835/webrev.00/index.html
> 99 lines changed: 88 ins; 1 del; 10 mod

Hi all,

could you please review this small fix for CTW runner which adds verification that CTW was run for all classes?
currently, CTW runner stops execution when a child process exits w/ zero code, this might lead to missed test cover and/or false negative tests results. This fix adds a check that the index of the last compiled class equals to count of classes in a target.

webrev: http://cr.openjdk.java.net/~iignatyev//8178835/webrev.00/index.html
JBS: https://bugs.openjdk.java.net/browse/JDK-8178835
testing: applications/ctw

Thanks,
-- Igor