hg: jdk9/hs-rt/hotspot: 8152185: ReferencePendingListLocker incorrectly assumes that the lock is never taken recursively

[per.liden at oracle.com]

Changeset: 81530aff15aa
Author:    pliden
Date:      2016-03-18 15:54 +0100
URL:       http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/81530aff15aa

8152185: ReferencePendingListLocker incorrectly assumes that the lock is never taken recursively
Reviewed-by: stefank, sjohanss

! src/share/vm/gc/shared/referencePendingListLocker.cpp