RFR: Merge openjdk/jdk:master

[William Kemper]

Merges tag jdk-23+2

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Commit messages:
 - 8321565: [REDO] Heap dump does not contain virtual Thread stack references
 - 8321400: java/foreign/TestStubAllocFailure.java fails with code cache exhaustion
 - 8321973: Parallel: Remove unused methods in AdaptiveSizePolicy
 - 8321808: G1: Use unsigned type for non-negative G1 flags
 - 8293622: Cleanup use of G1ConcRefinementThreads
 - 8321515: ARM32: Move method resolution information out of the cpCache properly
 - 8321279: Implement hashCode() in Heap-X-Buffer.java.template
 - 8321825: Remove runtime/CompressedOops/CompressedClassPointers.java from the ProblemList
 - 8321474: TestAutoCreateSharedArchiveUpgrade.java should be updated with JDK 21
 - 8321557: Move SOURCE line verification for OracleJDK out of OpenJDK
 - ... and 47 more: https://git.openjdk.org/shenandoah/compare/519ecd35...cf948548

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

Changes: https://git.openjdk.org/shenandoah/pull/376/files
  Stats: 13526 lines in 174 files changed: 10537 ins; 2375 del; 614 mod
  Patch: https://git.openjdk.org/shenandoah/pull/376.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/376/head:pull/376

PR: https://git.openjdk.org/shenandoah/pull/376