RFR: JDK-8139294: TestGCEventMixedWithCMSConcurrent.java still fails after JDK-8134953

[Bengt Rutisson]

Hi everyone,

Could I have a couple of reviews for this fix to a nightly failure?

http://cr.openjdk.java.net/~brutisso/8139294/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8139294

When a STW full GC interrupts a concurrent CMS cycle it calls reset() on 
the CMS collector. But it calls that from the STW thread and thus uses 
the wrong GC Id. It should be using the GC Id from the concurrent thread.

Thanks,
Bengt