RFR: Merge openjdk/jdk:master [v2]

[William Kemper]

> Merges tag jdk-22+21

William Kemper has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 252 commits:

 - Merge tag 'jdk-22+21' into merge-jdk-22+21
   
   Added tag jdk-22+21 for changeset d96f38b8
 - 8317510: Change Windows debug symbol files naming to avoid losing info when an executable and a library share the same name
   
   Reviewed-by: ihse, erikj
 - 8318613: ChoiceFormat patterns are not well tested
   
   Reviewed-by: naoto
 - 8318186: ChoiceFormat inconsistency between applyPattern() and setChoices()
   
   Reviewed-by: naoto
 - 8318487: Specification of the ListFormat.equals() method can be improved
   
   Reviewed-by: joehw, rriggs, lancea, iris
 - 8317360: Missing null checks in JfrCheckpointManager and JfrStringPool initialization routines
   
   Reviewed-by: shade, egahlin
 - 8318735: RISC-V: Enable related hotspot tests run on riscv
   
   Reviewed-by: fyang, luhenry
 - 8318727: Enable parallelism in vmTestbase/vm/gc/concurrent tests
   
   Reviewed-by: shade, lmesnik
 - 8318607: Enable parallelism in vmTestbase/nsk/stress/jni tests
   
   Reviewed-by: lmesnik, shade
 - 8318608: Enable parallelism in vmTestbase/nsk/stress/threads tests
   
   Reviewed-by: lmesnik, shade
 - ... and 242 more: https://git.openjdk.org/shenandoah/compare/c584b481...12124e43

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

Changes: https://git.openjdk.org/shenandoah/pull/349/files
 Webrev: https://webrevs.openjdk.org/?repo=shenandoah&pr=349&range=01
  Stats: 30986 lines in 1077 files changed: 19698 ins; 6209 del; 5079 mod
  Patch: https://git.openjdk.org/shenandoah/pull/349.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/349/head:pull/349

PR: https://git.openjdk.org/shenandoah/pull/349