RFR: 6980847: (fs) Files.copy needs to be tuned [v10]

[Alan Bateman]

On Wed, 22 Jun 2022 17:36:49 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Modify `UnixCopyFile.copyFile()` to set the transfer size to the least common multiple of the source and destination file block sizes if the block sizes are not equal. Modify `WindowsFileCopy.copy()` to set `COPY_FILE_NO_BUFFERING` in the flags passed to `CopyFileEx()` if the size of the transfer is greater than a threshold.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   6980847: Clean up initialization of CopyFileEx() flags

Marked as reviewed by alanb (Reviewer).

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

PR: https://git.openjdk.org/jdk/pull/9161