Log Message:
Update to jpeg-8d:

Version 8d  15-Jan-2012
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Add cjpeg -rgb option to create RGB JPEG files.
Using this switch suppresses the conversion from RGB
colorspace input to the default YCbCr JPEG colorspace.
This feature allows true lossless JPEG coding of RGB color images.
The recommended command for this purpose is currently
cjpeg -rgb -block 1 -arithmetic.
SmartScale capable decoder (introduced with IJG JPEG 8) required.
Thank to Michael Koch for the initial suggestion.

Add option to disable the region adjustment in the transupp crop code.
Thank to Jeffrey Friedl for the suggestion.

Thank to Richard Jones and Edd Dawson for various minor corrections.

Thank to Akim Demaille for configure.ac cleanup.