[lworld] Integrated: JDK-8276656: [lworld] merge JEP 416: reimplement core reflection with method handles

[Mandy Chung]

JEP 416 will be in jdk-18+22 promoted build.   This PR makes lworld merge with jdk-18+22 easier.

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Commit messages:
 - fixup the merge with JEP 416

Changes: https://git.openjdk.java.net/valhalla/pull/579/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=579&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276656
  Stats: 6429 lines in 79 files changed: 5875 ins; 316 del; 238 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/579.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/579/head:pull/579

PR: https://git.openjdk.java.net/valhalla/pull/579