RFR: 8293121: (fs) Refactor UnixFileSystem copying into generic Unix, Linux, and BSD implementations [v3]

[Alan Bateman]

On Wed, 31 Aug 2022 16:21:25 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Refactor `UnixFileSystem` and related classes to move implementations specific to Linux and BSD (macOS) into OS-specific classes and native code. Generic Unix implementations remain in existing `Unix*` files.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8293121: Forgot to move UnixCopyFile.c to UnixFileSystem.c

I skimmed through the changes in be36c5a6 and this is a good refactor. I don't have time to do a detailed walk through right now but I'll get to that soon.

-------------

PR: https://git.openjdk.org/jdk/pull/10093