As sifo already said, it's way too large. If it really doesn't work I can upload it elsewhere (suggestion?).

I have to mention, that flatboat doesn't behave like mupdf, it just inherited its rendering engine (which seems to be faster than poppler). But I will upload the original mupdf to extras-devel, too, since it's source package generates "libmupdf-dev", which is required by my package.