Improve access flag reflection for preview on/off. In this process, I noted javac is incorrectly injecting ACC_IDENTITY to 69.0 class' `InnerClasses` attribute and fixed that.
There is still some inconsistency, such as implying ACC_IDENTITY when preview is on for classes. Don't know if we have discussed on this yet. No new test failures. ------------- Commit messages: - Stage - Stage - Trivial - Unit test - Fix identity flag missing for preview inner classes - Stage - Fixes - Make use of current preview features Changes: https://git.openjdk.org/valhalla/pull/1533/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1533&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8364095 Stats: 336 lines in 43 files changed: 189 ins; 81 del; 66 mod Patch: https://git.openjdk.org/valhalla/pull/1533.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1533/head:pull/1533 PR: https://git.openjdk.org/valhalla/pull/1533
