makelossless: remove muxmovie process

ffmpeg can now copy c608 tracks from/to mov
makelossless: make input case-insensitive
makelossless: usage update
makelossless: remove antidote fix for improperly made progressive ffv1 v1
makelossless: remove unused lines
makelossless: use _prep_ffmpeg_log
makelossless: use inputoptions/middleoptions