RFR: 8337143: (fc, fs) Move filesystem-related native objects from libnio to libjava [v4]

[Brian Burkhalter]

On Thu, 8 Aug 2024 14:31:09 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> And pthread?
>
> I will check.

`pthread` is still needed:

open/src/java.base/unix/native/libjava/nio/ch/NativeThread.c:83: error: undefined reference to 'pthread_kill'

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PR Review Comment: https://git.openjdk.org/jdk/pull/20317#discussion_r1709879806