[lworld] RFR: Merge jdk

[David Simms]

Merge jdk

-------------

Commit messages:
 - Trailing whitespace
 - Merge complete
 - More version flicks
 - Merge remote-tracking branch 'refs/remotes/origin/lworld_merge_loom' into lworld_merge_loom
 - Removed obsolete ToDos
 - Removed call verification code which does not work on aarch64 due to far calls
 - Merge branch 'lworld' into lworld_merge_loom
 - Merge remote-tracking branch 'refs/remotes/origin/lworld_merge_loom' into lworld_merge_loom
 - Added missing null check
 - Move nmethod entry barriers to the right place
 - ... and 1737 more: https://git.openjdk.org/valhalla/compare/ec987c5c...66353dd0

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.org/?repo=valhalla&pr=734&range=00.0
 - jdk: https://webrevs.openjdk.org/?repo=valhalla&pr=734&range=00.1

Changes: https://git.openjdk.org/valhalla/pull/734/files
  Stats: 791072 lines in 10070 files changed: 538250 ins; 151956 del; 100866 mod
  Patch: https://git.openjdk.org/valhalla/pull/734.diff
  Fetch: git fetch https://git.openjdk.org/valhalla pull/734/head:pull/734

PR: https://git.openjdk.org/valhalla/pull/734