RFR: 8370123: Minor jpackage refactoring [v2]

[Alexander Matveev]

On Sat, 18 Oct 2025 04:34:54 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

>> Minor changes, no functional impact.
>> 
>> - ApplicationBuilder: add externalApplication() and mainLauncherClassName() methods
>> - `AppImageSigner.normalizeAppImageLayout()` -> `AppImageSigner.copyWithUnresolvedAppImageLayout()`
>> - Add `JLinkRuntimeBuilder.ensureBaseModuleInModulePath()`; move code away from StandardBundlerParam; remove redundant "warning.no.jdk.modules.found" string ID
>> - Add `OverridableResource.probe()` method
>> - Remove dead and "odd" code from IOUtils
>
> Alexey Semenyuk has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains nine commits:
> 
>  - Merge branch 'master' into JDK-8370123
>  - JLinkRuntimeBuilder: remove trailing whitespace
>  - JLinkRuntimeBuilder: add a comment
>  - IOUtils: remove dead code; remove getFileName(), getParent() functions.
>  - ApplicationLaunchers: minor
>  - OverridableResource: add probe() method
>  - Add JLinkRuntimeBuilder.ensureBaseModuleInModulePath()
>  - AppImageSigner: better function name
>  - ApplicationBuilder: add externalApplication() and mainLauncherClassName() methods

Looks good.

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Marked as reviewed by almatvee (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27873#pullrequestreview-3358408932