[Ohrrpgce] SVN: teeemcee/9921 Add an uJPEG error code to report unsupported progressive JPEGs

[subversion at HamsterRepublic.com]

teeemcee
2018-01-01 06:54:07 -0800 (Mon, 01 Jan 2018)
305
Add an uJPEG error code to report unsupported progressive JPEGs

I ran a collection of 3100 jpegs I'd downloaded while mirroring OHR websites
through uJPEG. Hundreds were correctly detected as invalid. 21% of valid files
were progressive. Only one was unsupported for a different reason: CMYK color
space.
---
U   wip/lib/ujpeg.c
U   wip/lib/ujpeg.h