RFR: Merge jdk8u:master [v2]

[Andrew John Hughes]

> Merge jdk8u342-b07

Andrew John Hughes has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.

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Changes:
  - all: https://git.openjdk.org/shenandoah-jdk8u/pull/21/files
  - new: https://git.openjdk.org/shenandoah-jdk8u/pull/21/files/6646316d..6646316d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah-jdk8u&pr=21&range=01
 - incr: https://webrevs.openjdk.org/?repo=shenandoah-jdk8u&pr=21&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/shenandoah-jdk8u/pull/21.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk8u.git pull/21/head:pull/21

PR: https://git.openjdk.org/shenandoah-jdk8u/pull/21