[lworld] Integrated: Merge jdk

[David Simms]

Merge from jdk-21+5 to jdk-21+10

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Commit messages:
 - Adjust for new code
 - Merge tag 'jdk-21+10' into lworld_merge_jdk_incr_from_21_5
 - 8302163: Speed up various String comparison methods with ArraysSupport.mismatch
 - 8301460: Clean up LambdaForm to reference BasicType enums directly
 - 8302127: Remove unused arg in write_ref_field_post
 - 8301225: Replace NULL with nullptr in share/gc/shenandoah/
 - 8301700: Increase the default TLS Diffie-Hellman group size from 1024-bit to 2048-bit
 - 8301463: Code in DatagramSocket still refers to resolved JDK-8237352
 - 8302325: Wrong comment in java.base/share/native/libjimage/imageFile.hpp
 - 8300808: Accelerate Base64 on x86 for AVX2
 - ... and 568 more: https://git.openjdk.org/valhalla/compare/131a3cee...10a88e5b

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.org/?repo=valhalla&pr=846&range=00.0
 - jdk: https://webrevs.openjdk.org/?repo=valhalla&pr=846&range=00.1

Changes: https://git.openjdk.org/valhalla/pull/846/files
  Stats: 108987 lines in 3476 files changed: 45110 ins; 24744 del; 39133 mod
  Patch: https://git.openjdk.org/valhalla/pull/846.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/846/head:pull/846

PR: https://git.openjdk.org/valhalla/pull/846