RFR: 8353185: Introduce the concept of upgradeable files in context of JEP 493 [v4]

[Severin Gehwolf]

On Thu, 10 Apr 2025 09:03:36 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> It's very odd, but when I attempt this then the resource is not found. It seems to fail on the module name verification. For example: `jlink --help | tail -n2` shows as `disabled` for an enabled linkable runtime image.
>
> Without reproducing, I can't immediately say why Class.getResourceAsStream would fail here. This is a good API for locating resources in the caller's module.

I'll try to find a reproducer outside this PR and will let you know if I find anything.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24388#discussion_r2036887632