RFR: Merge jdk22

[Jorn Vernee]

Merge JDK 22 branch into the master branch. The master will move to targeting jdk22

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Commit messages:
 - minor cleanup
 - Merge branch 'jdk22' into MergeJDK22Master
 - Merge
 - 7903660: Drop layout-inferring varargs invoker + add method handle factory
 - Add missing inputs to tasks in gradle build
 - 7903656: Variadic invoker class names are not mangled
 - Refresh libclang (take three)
 - 7903654: Jextract should use library lookup
 - Streamline gradle task dependencies
 - Fix curl sample
 - ... and 67 more: https://git.openjdk.org/jextract/compare/8730fcf0...267e2497

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.org/?repo=jextract&pr=208&range=00.0
 - jdk22: https://webrevs.openjdk.org/?repo=jextract&pr=208&range=00.1

Changes: https://git.openjdk.org/jextract/pull/208/files
  Stats: 24639 lines in 344 files changed: 11669 ins; 8343 del; 4627 mod
  Patch: https://git.openjdk.org/jextract/pull/208.diff
  Fetch: git fetch https://git.openjdk.org/jextract.git pull/208/head:pull/208

PR: https://git.openjdk.org/jextract/pull/208