RFR: 8294696 - BufferedInputStream.transferTo should drain buffer when mark set [v6]

[Brian Burkhalter]

On Mon, 31 Oct 2022 13:30:13 GMT, Markus KARG <duke at openjdk.org> wrote:

>> This PR implements JDK-8294696.
>
> Markus KARG has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Alternative C + Arrays.copyOfRange()

Looks all right.

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Marked as reviewed by bpb (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10525