RFR: 8342380: Implement JEP 498: Warn upon Use of Memory-Access Methods in sun.misc.Unsafe [v3]

[Alan Bateman]

> Change default value of the command line option --sun-misc-unsafe-memory-access from "allow" to "warn".

Alan Bateman has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:

 - Merge branch 'master' into JDK-8342380
 - Merge branch 'master' into JDK-8342380
 - Update test
 - Merge branch 'master' into JDK-8342380
 - Update usage/man page
 - Initial commit

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Changes: https://git.openjdk.org/jdk/pull/21762/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21762&range=02
  Stats: 29 lines in 4 files changed: 10 ins; 5 del; 14 mod
  Patch: https://git.openjdk.org/jdk/pull/21762.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21762/head:pull/21762

PR: https://git.openjdk.org/jdk/pull/21762