8012237: CompletableFuture/Basic.java still fails intermittently

[Chris Hegarty]

I missed three cases in the previous change [1]. That will teach me for 
working on the weekend ;-)

A full audit of the use of the XxxEitherXxx methods in the test has been 
done, and there are still three particular checks that are possibly 
incorrect. The failure is not always seen as this is racy code.

http://cr.openjdk.java.net/~chegar/8012237/webrev.00/webrev/test/java/util/concurrent/CompletableFuture/Basic.java.udiff.html

Thanks,
-Chris.

[1] 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-April/016013.html