RFR 8220613: [TEST] java/util/Arrays/TimSortStackSize2.java times out with fastdebug build

[Roger Riggs]

Please review a test configure change to skip running TimSortStackSize2
on the fast debug build. The running time of the test is excessive.
This particular test has been timing out intermittently for a long time.

Webrev:
   http://cr.openjdk.java.net/~rriggs/webrev-timsort-timeout-8220613/

Issue:
   https://bugs.openjdk.java.net/browse/JDK-8220613

Thanks, Roger