RFR: 8160327: Support for thumbnails present in APP1 marker for JPEG [v2]

[Jeremy]

On Fri, 14 Feb 2025 23:58:16 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Hmm. I think it better to address it now. Who knows when we'd get back to it.
>
> I have a patch which handles both JFIF and Exif thumbnails if this is not otherwise resolved. To revisit next week ...

I integrated Brian's patch ( https://github.com/openjdk/jdk/pull/22898#issuecomment-2666324177 ) into this PR: now we support both thumbnails and the JFIF thumbnail(s) are processed first.

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PR Review Comment: https://git.openjdk.org/jdk/pull/22898#discussion_r1967118787