RFR: 8355536: Model preview enabled VM features in ClassFileFormatVersion [v10]

[Chen Liang]

> Sometimes, for version-specific feature access APIs, we wish to access the preview features of the current Java SE release. To reduce the impact of adding one preview-specific version on every site, we can add a constant modeling the preview features as a fake version.

Chen Liang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 18 commits:

 - Tweak test
 - More tweaks
 - Refresh
 - Merge branch 'master' of https://github.com/openjdk/jdk into feature/preview-cffv
 - Merge branch 'master' of https://github.com/openjdk/jdk into feature/preview-cffv
 - Fixes
 - Fix sourceversion test
 - Merge branch 'master' of https://github.com/openjdk/jdk into feature/preview-cffv
 - Merge branch 'master' of https://github.com/openjdk/jdk into feature/preview-cffv
 - Merge branch 'master' of https://github.com/openjdk/jdk into feature/preview-cffv
 - ... and 8 more: https://git.openjdk.org/jdk/compare/d6044d3e...8e128d29

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Changes: https://git.openjdk.org/jdk/pull/25017/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25017&range=09
  Stats: 120 lines in 3 files changed: 96 ins; 2 del; 22 mod
  Patch: https://git.openjdk.org/jdk/pull/25017.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25017/head:pull/25017

PR: https://git.openjdk.org/jdk/pull/25017