RFR: 8341775: Duplicate manifest files are removed by jarsigner after signing [v15]

[Hai-May Chao]

On Fri, 14 Mar 2025 15:55:51 GMT, Kevin Driver <kdriver at openjdk.org> wrote:

>> JDK-8341775: In the case where there is a *single* META-INF directory but potentially *multiple* manifest files of different cases, print a warning before selecting the first one and ignoring the rest (the current behavior should be maintained).
>
> Kevin Driver has updated the pull request incrementally with one additional commit since the last revision:
> 
>   make 2025 the only copyright year

Marked as reviewed by hchao (Committer).

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PR Review: https://git.openjdk.org/jdk/pull/22222#pullrequestreview-2686023950