RFR: 8277489: Rewrite JAAS UnixLoginModule with FFM [v10]

[Martin Doerr]

On Wed, 21 Jan 2026 19:39:49 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Rewrite the native calls with FFM.
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   unnecessary initialization

Marked as reviewed by mdoerr (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/28931#pullrequestreview-3689482675