hg: jdk/jdk: 8221260: Initialize more class members on construction, remove some unused ones

[leo.korinth at oracle.com]

Changeset: 41af8d0546bc
Author:    lkorinth
Date:      2019-03-25 14:46 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/41af8d0546bc

8221260: Initialize more class members on construction, remove some unused ones
Reviewed-by: kbarrett, tschatzl

! src/hotspot/share/gc/g1/g1RegionToSpaceMapper.cpp
! src/hotspot/share/gc/g1/g1RegionToSpaceMapper.hpp
! src/hotspot/share/gc/parallel/adjoiningGenerations.cpp
! src/hotspot/share/gc/parallel/adjoiningGenerations.hpp
! src/hotspot/share/gc/parallel/gcTaskThread.cpp
! src/hotspot/share/gc/parallel/gcTaskThread.hpp
! src/hotspot/share/gc/parallel/parallelScavengeHeap.hpp
! src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.cpp
! src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.hpp
! src/hotspot/share/gc/parallel/psFileBackedVirtualspace.cpp
! src/hotspot/share/gc/parallel/psFileBackedVirtualspace.hpp
! src/hotspot/share/gc/parallel/psMarkSweepDecorator.hpp
! src/hotspot/share/gc/parallel/psParallelCompact.cpp
! src/hotspot/share/gc/parallel/psVirtualspace.cpp
! src/hotspot/share/gc/parallel/psVirtualspace.hpp
! src/hotspot/share/gc/parallel/psYoungGen.cpp
! src/hotspot/share/gc/shared/adaptiveSizePolicy.cpp
! src/hotspot/share/gc/shared/gcStats.cpp