Branches for Sid

Author: Fabian Greffrath
Revision Date: 2015-06-11 11:48:24 UTC

* Change Build-Dependency on the deprecated appdata-tools to appstream-util
  (Closes: #788205), thanks Andreas Henriksson.
* Fix crashes if XDG_MUSIC_DIR is unset (Closes: #750194),
  thanks Paul Slootman.
* Demote gstreamer1.0-plugins-bad from Depends to Recommends, it has Priority
  extra.
* Demote gnome-codec-install to Suggests, as there aren't many more codecs
  left to install, and remove non-existent gstreamer-codec-install
  alternative.