RFR: Merge openjdk/jdk21u-dev:master

[William Kemper]

Merges tag jdk-21.0.3+4

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Commit messages:
 - 8322790: RISC-V: Tune costs for shuffles with no conversion
 - 8324874: AArch64: crypto pmull based CRC32/CRC32C intrinsics clobber V8-V15 registers
 - 8318737: Fallback linker passes bad JNI handle
 - 8320890: [AIX] Find a better way to mimic dl handle equality
 - 8325672: C2: allocate PhaseIdealLoop::_loop_or_ctrl from C->comp_arena()
 - 8315891: java/foreign/TestLinker.java failed with "error occurred while instantiating class TestLinker: null"
 - 8315602: Open source swing security manager test
 - 8324347: Enable "maybe-uninitialized" warning for FreeType 2.13.1
 - 8318603: Parallelize sun/java2d/marlin/ClipShapeTest.java
 - 8009550: PlatformPCSC should load versioned so
 - ... and 18 more: https://git.openjdk.org/shenandoah-jdk21u/compare/57956950...4fcc5c74

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

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/22/files
  Stats: 1841 lines in 135 files changed: 1278 ins; 159 del; 404 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/22.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/22/head:pull/22

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/22