Request for simple review of launcher tests 7189944

[Kumar Srinivasan]

Hi,

In my previous push for  
http://cr.openjdk.java.net/~ksrini/7146424/webrev.0/
I missed adding CR number to the regression test Arrrghs.java, also some
minor improvements to TestHelper.java for better diagnosis of failing tests.

http://cr.openjdk.java.net/~ksrini/7189944/webrev.0/

Thanks
Kumar