RFR: JDK-8307807 Replace use of System.getProperty("os.name") with PlatformUtil calls [v6]

[Carl Döbbelin]

On Fri, 12 May 2023 15:15:09 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> I initially had the same thought. What this actually highlights, though, is the danger of having this sort of check scattered in multiple places, but done differently. If it was important that "darwin" be recognized (it isn't), then it would be wrong to have this check recognize it, but all other "isMac" checks not recognize it.
>
> Do we officially support Darwin OS?

Darwin OS was a precursor of OS X that followed after rhapsody. As its own OS it stopped being supported in 2002. since kevin was discussing to only support MacOS 11 or newer in jfx 21, i think its safe to say we dont support this old pre version.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1132#discussion_r1192507771