Optional update to add libmad, madplay
This update adds libmad, madplay to the distribution:
* libmad is a MPEG audio decoder library.
* madplay is a MPEG audio decoder and player.
- Submitted by Olaf Hering (olh)
Fixed bugs
bnc#1061641
add some multimedia libraries (a52dec, libmad, madplay, mpg123)