added libavcodec-unstripped-52 to normalize audio access to mp3.
added libavcodec-unstripped-52 to normalize audio access to mp3.



Autoconverted from SVN (revision:293)

artefactual/archivematica-history,artefactual/archivematica-history,artefactual/archivematica-history,artefactual/archivematica-history