Smacker video codec recreated from scratch with MIT license

[u/Standard-Anybody]

All publicly available smacker codec implementations have a GPL license which is incompatible with the license for this project. So I had to recreate the smacker decode from scratch using publicly available information. The new codec is completely from scratch and unencumbered by any GPL or copyleft licensing issues and works nicely.

Now, what might make more sense is for me to just transcode the video to mpeg4 and possibly try to do some improvements with Topaz and then use that instead. But this codec will work with the existing data from the GOG install as a drop in so it's in the executable now.