hg: jdk/sandbox: 8232686: Turn parallel gc develop tracing flags into unified logging

[chris.hegarty at oracle.com]

Changeset: 7d73b376f5d2
Author:    iwalulya
Date:      2020-02-18 11:00 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/7d73b376f5d2

8232686: Turn parallel gc develop tracing flags into unified logging
Reviewed-by: sjohanss, tschatzl, lkorinth

! src/hotspot/share/gc/parallel/parallel_globals.hpp
! src/hotspot/share/gc/parallel/psParallelCompact.cpp