RFR: 8353197: Document preconditions for JavaLangAccess methods [v7]

[Volkan Yazici]

On Mon, 12 May 2025 19:42:15 GMT, Volkan Yazici <vyazici at openjdk.org> wrote:

>> Document preconditions on certain `JavaLangAccess` methods that use operations either unsafe and/or without range checks.
>
> Volkan Yazici 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 nine additional commits since the last revision:
> 
>  - Merge remote-tracking branch 'upstream/master' into jla
>  - Improve `uncheckedGetBytesNoRepl` docs
>  - Apply suggestions from code review
>    
>    Co-authored-by: Roger Riggs <Roger.Riggs at Oracle.com>
>  - Prefixed `JavaLangAccess::stringConcat1` with `unchecked`
>  - Fix `HexDigits` copyright year
>  - Fix copyright years
>  - Prefix touched methods with `unchecked`
>  - Fix typo in pre-existing JavaDoc
>  - Improve `JavaLangAccess` documentation

Green `tier1,2` results are attached to ticket.

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PR Comment: https://git.openjdk.org/jdk/pull/24982#issuecomment-2883918329