- Remove dependency to math/djbfft.
- Use libdts and libmad from ports instead of ones from the xine distribution. [*]
- Make dependency to graphics/aalib, graphics/ImageMagick and x11-toolkits/gtk20 optional. [*]
- Add WITH_AALIB, WITH_IMAGEMAGICK and WITH_GTK2 knobs accordingly. [*]
Suggested by: bland [*]