hg: panama/dev: Automatic merge with default

[maurizio.cimadamore at oracle.com]

Changeset: 6925f04b6463
Author:    mcimadamore
Date:      2019-09-18 22:09 +0000
URL:       https://hg.openjdk.java.net/panama/dev/rev/6925f04b6463

Automatic merge with default

- src/hotspot/share/gc/z/zUtils.cpp
- src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointBlob.cpp
- src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointBlob.hpp
- src/hotspot/share/jfr/recorder/checkpoint/types/jfrTypeSetWriter.hpp
- src/hotspot/share/oops/access.cpp