hg: shenandoah/jdk8u/hotspot: Re-implement verbose GC logging.

[ashipile at redhat.com]

Changeset: aaf244db1ec5
Author:    shade
Date:      2017-02-16 17:54 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/aaf244db1ec5

Re-implement verbose GC logging.

! src/share/vm/gc_implementation/shenandoah/shenandoahConcurrentThread.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahGCTraceTime.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahGCTraceTime.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoahLogging.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahMarkCompact.cpp
! src/share/vm/gc_implementation/shenandoah/vm_operations_shenandoah.cpp