RFR: 8162: Update OptionsCheckRule to JDK21 [v3]

[Henrik Dafgård]

> Brings the OptionsCheckRule up to date with the state of JVM flags as of JDK 21.

Henrik Dafgård has updated the pull request incrementally with one additional commit since the last revision:

  Update copyright years

-------------

Changes:
  - all: https://git.openjdk.org/jmc/pull/542/files
  - new: https://git.openjdk.org/jmc/pull/542/files/1dee1d1e..9bb7c868

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jmc&pr=542&range=02
 - incr: https://webrevs.openjdk.org/?repo=jmc&pr=542&range=01-02

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jmc/pull/542.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/542/head:pull/542

PR: https://git.openjdk.org/jmc/pull/542