Commit 88ae60986eb2da8511ea590062ebef42858b290f

DRC 2020-10-27T13:28:56

Merge branch 'ijg' into dev - Restore GIF read/compressed GIF write support from jpeg-6a and jpeg-9d. - Integrate jpegtran -wipe and -drop options from jpeg-9a and jpeg-9d. - Integrate jpegtran -crop extension (for expanding the image size) from jpeg-9a and jpeg-9d. - Integrate other minor code tweaks from jpeg-9*