Adds a new `-ignoreSince` flag to the SinceChecker, mainly to help long running projects that are not sure about `@since` version of an API. The value of `@since` in `@since <ignoredString>` will be the release version, as I assume that this is a new API in a different OpenJDK project. This flag is not meant to be used in the JDK.
I also improved error message when the actual `@since` value doesn’t match expectations. It used to say `@since version 9; should be <number>` but it now explains the error more clearly. ------------- Commit messages: - better handle formats like 6u25, rewrite function to be simpler - respond to feedback by chen - add -ignoreSince flag to sinceChecker Changes: https://git.openjdk.org/jdk/pull/23447/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23447&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8345212 Stats: 66 lines in 1 file changed: 45 ins; 14 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/23447.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23447/head:pull/23447 PR: https://git.openjdk.org/jdk/pull/23447
