hg: shenandoah/jdk8u/hotspot: 3 new changesets

[ashipile at redhat.com]

Changeset: 0edb92fff7b6
Author:    sangheki
Date:      2017-02-09 19:08 -0800
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/0edb92fff7b6

Cherry-pick JDK-8173013: JVMTI tagged object access needs G1 pre-barrier

! src/share/vm/prims/jvmtiTagMap.cpp

Changeset: c07ab9c2c971
Author:    mdoerr
Date:      2016-09-06 13:01 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/c07ab9c2c971

Cherry-pick JDK-8165489: Missing G1 barrier in Unsafe_GetObjectVolatile

! src/share/vm/prims/unsafe.cpp

Changeset: cb502b8ed9ed
Author:    shade
Date:      2018-02-07 21:53 +0000
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/cb502b8ed9ed

Cherry-pick JDK-8187577: JVM crash during gc doing concurrent marking

! src/share/vm/prims/jvmtiGetLoadedClasses.cpp