[lworld] RFR: 8368497: [lworld] redo: New lint category `initialization` for code that would not be allowed in the prologue

[Vicente Romero]

redoing JDK-8367698 as the original fix had to be delta applied due to some test failures

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Commit messages:
 - fixing another test failure
 - Merge branch 'lworld' into JDK-8368497
 - Merge branch 'lworld' into JDK-8368497
 - Merge branch 'lworld' into JDK-8368497
 - Merge branch 'lworld' into JDK-8368497
 - 8368497: [lworld] redo: New lint category  for code that would not be allowed in the prologue

Changes: https://git.openjdk.org/valhalla/pull/1650/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1650&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368497
  Stats: 669 lines in 78 files changed: 574 ins; 9 del; 86 mod
  Patch: https://git.openjdk.org/valhalla/pull/1650.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1650/head:pull/1650

PR: https://git.openjdk.org/valhalla/pull/1650