hg: shenandoah/jdk: Fix CAS-obj predicates and add expected-null-versions for cmpxchg-narrow-oop

[roman at kennke.org]

Changeset: 583cf661892f
Author:    rkennke
Date:      2018-07-13 13:52 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/583cf661892f

Fix CAS-obj predicates and add expected-null-versions for cmpxchg-narrow-oop

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