Add Linux Stopmotion application

Add the Linux Stopmotion application (for creating stop-motion animation movies) and its dependencies.

I had to add a (tiny) patch to make stopmotion work (with uvccapture). Latest Ubuntu (14.04) has stopmotion v0.7.2 which doesn't need the patch, but Arch Linux has v0.8.0 but no patch(!). I'm guessing their version don't work with uvccapture, but I haven't verified it yet.