RFR: Use compiler switch to filter out `__asm` statements on Windows

[Maurizio Cimadamore]

On Wed, 10 Apr 2024 17:14:39 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> A newly added test uses `__asm` statements which are not supported by MSVC. I failed to catch this during the review of that patch, and this result in a compilation failure on Windows in the most recent version of the code.
> 
> The test that needs this native code doesn't run on Windows any way, so I've removed all the Windows-isms from the native code, and instead just disabled compilation of the problematic code on Windows using a compiler switch.
> 
> Alternatively, we could modify the `CMakeLists.txt` file to disable building this particular library on Windows, if that's preferred.

Thanks for checking. Question: why didn't the GHA tests failed?

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Marked as reviewed by mcimadamore (Reviewer).

PR Review: https://git.openjdk.org/jextract/pull/234#pullrequestreview-1992306089