hg: shenandoah/jdk9/hotspot: Fixed Shenandoah JNI critical locking. Again.

[roman at kennke.org]

Changeset: 21f424f45bd7
Author:    rkennke
Date:      2016-02-04 22:24 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/21f424f45bd7

Fixed Shenandoah JNI critical locking. Again.

! src/share/vm/gc/shenandoah/shenandoahJNICritical.cpp
! src/share/vm/gc/shenandoah/shenandoahJNICritical.hpp
! src/share/vm/runtime/mutexLocker.cpp
! src/share/vm/runtime/mutexLocker.hpp