hg: shenandoah/jdk9/hotspot: Don't update any refs in init-mark pause, and only update refs in final-mark if needed.

[roman at kennke.org]

Changeset: 746f72bbf7fe
Author:    rkennke
Date:      2016-06-21 17:53 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/746f72bbf7fe

Don't update any refs in init-mark pause, and only update refs in final-mark if needed.

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp