[lworld] RFR: 8351362: [lworld] Post-process @Strict annotation for testing

[Chen Liang]

Introduce a test-only `@StrictInit` annotation for injecting `ACC_STRICT_INIT` to class files.

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Commit messages:
 - Extra diff
 - Tweak approach
 - Junk
 - Merge branch 'lworld' of https://github.com/openjdk/valhalla into test/strict-processor
 - Merge branch 'test/strict-processor' of github.com:liach/valhalla into test/strict-processor
 - Rollback to the jdk internal strict annotation
 - Revert back to the jdk internal strict
 - Merge branch 'lworld' of https://github.com/openjdk/valhalla into test/strict-processor
 - Fix a bug and enhance tests
 - Add very primitive super rewrite functionality
 - ... and 3 more: https://git.openjdk.org/valhalla/compare/fa557ef3...ca1885eb

Changes: https://git.openjdk.org/valhalla/pull/1940/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1940&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351362
  Stats: 479 lines in 4 files changed: 479 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1940.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1940/head:pull/1940

PR: https://git.openjdk.org/valhalla/pull/1940