[lworld] RFR: 8333675: [lworld] Handling of invalid class files [v2]

[Frederic Parain]

> Improve detection of invalid class files and test coverage of invalid scenarios.
> 
> Tested with Mach5, tier 1 to 3.

Frederic Parain has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 10 additional commits since the last revision:

 - Merge remote-tracking branch 'upstream/lworld' into invalid_classes
 - Merge remote-tracking branch 'upstream/lworld' into invalid_classes
 - Remove obsolete tests
 - More tests of VM fixing missing ACC_IDENTITY
 - Fix Copyright years
 - Add test checking that VM fixes missing ACC_IDENTITY in old class files
 - Add field tests for abstract value classes
 - Detect missing exception and other fixes
 - Merge remote-tracking branch 'upstream/lworld' into invalid_classes
 - Improve class validation and test coverage

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/1114/files
  - new: https://git.openjdk.org/valhalla/pull/1114/files/bc102323..624c50b8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1114&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1114&range=00-01

  Stats: 1313 lines in 49 files changed: 568 ins; 554 del; 191 mod
  Patch: https://git.openjdk.org/valhalla/pull/1114.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1114/head:pull/1114

PR: https://git.openjdk.org/valhalla/pull/1114