[lworld] RFR: 8330582: [lworld] The JVM must enforce new field modifiers rules

[Frederic Parain]

Small changes to implement new field modifiers rules (JVMS 4.5 Fields) related to ACC_STRICT.
Those changes trigger some test failures because of a bug in javac related to final synthetic field. This bug is tracked by JDK-8330583.

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Commit messages:
 - Add new field modifiers rules (ACC_STRICT)

Changes: https://git.openjdk.org/valhalla/pull/1076/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1076&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330582
  Stats: 600 lines in 4 files changed: 598 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/1076.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1076/head:pull/1076

PR: https://git.openjdk.org/valhalla/pull/1076