[OpenJDK 2D-Dev] [9] RFR JDK-8160327: Support for thumbnails present in APP1 marker for JPEG

[Brian Burkhalter]

Please review at your convenience.

Issue:	https://bugs.openjdk.java.net/browse/JDK-8160327
Patch:	http://cr.openjdk.java.net/~bpb/8160327/webrev.00/

Add thumbnail and standard metadata Document/ImageCreationTime from the APP1 Exif marker segment if present

The code has been tested using JPEG-Exif images with compressed thumbnails from Canon, Nikon, and Olympus cameras, and using a JPEG-Exif image with an uncompressed thumbnail from a Sony camera.

Thanks,

Brian