hg: shenandoah/jdk9/hotspot: Cleanup class unloading and string intern code.

[ashipile at redhat.com]

Changeset: 0c4408e41001
Author:    shade
Date:      2017-04-21 14:08 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/0c4408e41001

Cleanup class unloading and string intern code.

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc/shenandoah/shenandoahHeap.hpp
+ test/gc/shenandoah/StringInternCleanup.java