RFR: Merge openjdk/jdk21u:master

[William Kemper]

Merges tag jdk-21.0.8+3

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Commit messages:
 - 8316629: j.text.DateFormatSymbols setZoneStrings() exception is unhelpful
 - 8333117: Remove support of remote and manual debuggee launchers
 - 8267174: Many test files have the wrong Copyright header
 - 8310643: Misformatted copyright messages in FFM
 - 8210471: GZIPInputStream constructor could leak an un-end()ed Inflater
 - 8314319: LogCompilation doesn't reset lateInlining when it encounters a failure.
 - 8324345: Stack overflow during C2 compilation when splitting memory phi
 - 8315827: Kitchensink.java and RenaissanceStressTest.java  time out with jvmti module errors
 - 8312246: NPE when HSDB visits bad oop
 - 8313290: Misleading exception message from STS.Subtask::get when task forked after shutdown
 - ... and 20 more: https://git.openjdk.org/shenandoah-jdk21u/compare/96f7dbfd...38a356d3

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/194/files
  Stats: 9264 lines in 1002 files changed: 3496 ins; 3523 del; 2245 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/194.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/194/head:pull/194

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/194