Log Message:
Update abcde to 2.7.2:

abcde 2.7.2

  * When using musicbrainz, don't assume that there will be release
    events attached to a particular CD release. Bug fix for the addition
    of year information support in 2.7.1. Thanks to Ed Oehler and Alan W.
    Kerr for debugging help.
  * Support for output to the Matroska container (mka). Encoder
    is FFmpeg (or avconv). Typical conf file syntax would be:

     MKAENCODERSYNTAX=ffmpeg
     FFMPEG=ffmpeg
     FFMPEGENCOPTS="-c:a ac3 -b:a 448k"
     OUTPUTTYPE="mka"

    Thanks to Shantiq and Fakeoutdoorsman of the Ubuntu Forums
    for the idea.
  * Add id3tag mp3 tagger as this is the tagger available to
    OpenBSD users. Thanks to Christopher Zimmermann for the
    notification and patch.
  * Allow for cddb response 500. Thanks again to Von Welch for the
    bug report and patch. This closes Issue 26:
    http://abcde.einval.com/bugzilla/show_bug.cgi?id=26
  * Fix for 'expansion of $REDIR' bug on MacOSX. Thanks to Von Welch
    for the bug report. This closes Issue 22:
    http://abcde.einval.com/bugzilla/show_bug.cgi?id=22
  * Makefile adjusted to allow the sample abcde.conf file to be
    installed by default to /etc rather than $(prefix)/etc.
    Thanks to Volker Schmidt from archlinux for the bug report:
    https://bugs.archlinux.org/task/46671
  * Allow getalbumart to correctly place cover image when single
    track is selected. Thanks to Nino Burini for the bug report
    and also the fix. This closes Issue 25:
    http://abcde.einval.com/bugzilla/show_bug.cgi?id=25