Optional update to add a52dec, libmad, madplay, mpg123
This update adds a52dec, libmad, madplay, mpg123 to openSUSE Leap 42.2:
* a52dec is a ATSC A/52 stream decoder library.
* libmad is a MPEG audio decoder library.
* madplay is a MPEG audio decoder and player.
* mpg123 is a console MPEG audio player and decoder library.
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Submitted by
Olaf Hering (olh)
Fixed bugs
bnc#1061641
add some multimedia libraries (a52dec, libmad, madplay, mpg123)
