hg: jdk9/sandbox/hotspot: Merge

[pavel.rappo at oracle.com]

Changeset: 7c04fd5b3339
Author:    prappo
Date:      2016-05-03 12:34 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/hotspot/rev/7c04fd5b3339

Merge

- test/stress/gc/TestGCOld.java
- test/stress/gc/TestMultiThreadStressRSet.java
- test/stress/gc/TestStressIHOPMultiThread.java
- test/stress/gc/TestStressRSetCoarsening.java