RFR: 8301302: Platform preferences API [v36]

[Michael Strauß]

On Sat, 2 Dec 2023 00:24:36 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> Please read [this document](https://gist.github.com/mstr2/9f46f92c98d3c86aa6a0b4224a9a6548) for an introduction to the Platform Preferences API, and how it interacts with the proposed style theme and stage appearance features.
>
> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
> 
>   check for pending exceptions in GTK PlatformSupport

I've added a new macro `GLASS_CHECK_EXCEPTIONALLY_RETURN` in the macOS toolkit, which helps to remove some boilerplate when checking every JNI method call.

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PR Comment: https://git.openjdk.org/jfx/pull/1014#issuecomment-1836969979