RFR: 8377514: jpackage: support passing multiple exceptions to the top-level error handler [v2]

[Alexander Matveev]

On Wed, 11 Feb 2026 02:29:49 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

>> Make the top-level error reporter handle suppressed exceptions.
>> 
>> The bundling code may use the suppressed exceptions mechanism to report multiple error conditions.
>> 
>> Rework reporting of multiple signing identity errors using the new mechanism, simplified `MacFromOptions.createMacPkgPackage()`.
>> 
>> Additionally:
>>  - Simplified AppImageSigningConfigBuilder and SigningIdentityBuilder
>
> Alexey Semenyuk has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Copyright year update

Looks good.

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Marked as reviewed by almatvee (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29643#pullrequestreview-3782506636