hg: shenandoah/jdk10: Can not dedup string inside write barrier

[zgu at redhat.com]

Changeset: 2c3b3a412f8f
Author:    zgu
Date:      2017-11-06 11:27 -0500
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/rev/2c3b3a412f8f

Can not dedup string inside write barrier

! src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.inline.hpp