RFR: 8299595: Remove terminally deprecated JavaFX GTK 2 library [v9]

[Johan Vos]

On Wed, 1 Mar 2023 23:28:00 GMT, Thiago Milczarek Sayao <tsayao at openjdk.org> wrote:

>> Simple PR to remove gtk2 library compilation and loading.
>
> Thiago Milczarek Sayao has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Throw exception if unsupported or invalid version specified.

I was probably a bit too verbose in my comment. Kevin is correct, I only recommended a change (addition) in the text for the warning. Hence, if you revert your latest commit and then apply the textual diff Kevin recommends, we're good.

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PR: https://git.openjdk.org/jfx/pull/999