Fix building mod_libavcodec with recent libavcodec/libavformat and remove ancient...
drwxr-xr-x - ETL
drwxr-xr-x - autobuild
drwxr-xr-x - gtkmm-osx
drwxr-xr-x - synfig-core
drwxr-xr-x - synfig-osx
drwxr-xr-x - synfig-studio