RFR: 6980847: (fs) Files.copy needs to be tuned [v9]

[Brian Burkhalter]

On Wed, 22 Jun 2022 17:19:56 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> I did not do that because `flags` is final but I guess it need not be.
>
> Actually `flags` must be final as it is referenced from an inner class.

Addressed in 82bbc8b779befc254093239897e25e5db85e4e0b.

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