Improve Windows 64-bit detection

[Pyker]

No description provided.

[github-actions]

This issue is stale because it has been open for 90 days with no activity.

[1fxe]

You can check for sun.arch.data.model which is commonly defined and then fall back to "os.arch" if its not there. Relevant doc:
https://docs.oracle.com/javame/config/cdc/cdc-opt-impl/ojmeec/1.1/architecture/html/properties.htm
Platform word size. Examples: "32", "64", "unknown"

jshell> System.getProperty("sun.arch.data.model")
$1 ==> "64"

[Pyker]

sun.arch.data.model will only give you what bitness the JRE is, which is exactly the problem.

[1fxe]

Ah I see, in that case maybe JNI, JNA but even then its kind of overkill