hg: shenandoah/jdk: 2 new changesets

[ashipile at redhat.com]

Changeset: 0e32109905c8
Author:    shade
Date:      2018-03-07 11:19 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/0e32109905c8

Use os::naked_short_sleep instead of naked Thread events for sleeping

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentThread.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp

Changeset: 6d92c949ae62
Author:    shade
Date:      2018-03-07 11:19 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/6d92c949ae62

No need for fence in control loop: flags are now ShSharedVariables

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentThread.cpp