hg: jdk/jdk: 8202447: Fix unloading_occurred to mean unloading_occurred

[coleen.phillimore at oracle.com]

Changeset: 8624981f1ffa
Author:    coleenp
Date:      2018-04-27 15:00 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/8624981f1ffa

8202447: Fix unloading_occurred to mean unloading_occurred
Summary: nmethod unloading does not need to test for jvmti to set unloading_occurred, nor do we need to clean weak Klasses in metadata if unloading does not occur.
Reviewed-by: sspitsyn, rehn

! src/hotspot/share/code/compiledMethod.cpp
! src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.cpp
! src/hotspot/share/gc/g1/g1CollectedHeap.cpp
! src/hotspot/share/gc/parallel/psMarkSweep.cpp
! src/hotspot/share/gc/parallel/psParallelCompact.cpp
! src/hotspot/share/gc/serial/genMarkSweep.cpp
! src/hotspot/share/oops/instanceKlass.hpp
! src/hotspot/share/oops/klass.cpp
! src/hotspot/share/oops/klass.hpp
! src/hotspot/share/oops/methodData.cpp
! src/hotspot/share/prims/jvmtiExport.hpp