hg: shenandoah/jdk9/hotspot: Use MarkingCodeBlobClosure for evacuating/updating roots, to ensure no nmethod is visited twice.

[roman at kennke.org]

Changeset: 8450823b8aa9
Author:    rkennke
Date:      2015-12-17 22:46 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/8450823b8aa9

Use MarkingCodeBlobClosure for evacuating/updating roots, to ensure no nmethod is visited twice.

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