RFR: 8291978: jpackage: allow to override primary l10n files on Windows [v2]

[Naoto Sato]

On Mon, 8 Aug 2022 21:10:26 GMT, Alex Kasko <akasko at openjdk.org> wrote:

>> Good point. We have a discussion of how l10n files should be changed at https://github.com/openjdk/jdk/pull/9753. Can you confirm that if some property is missing in a resource bundle its value is picked from the English resource bundle?
>
> I've just pushed the commit with EN entries for all files before reading the latest comment. I'll verify the behaviour with `.wxl` and `.properties` files and will comment in this issue.

I believe for the `.properties` case, modifications for the localized files are not required, as ResourceBundles fall back to the root (English) bundle.

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PR: https://git.openjdk.org/jdk/pull/9780