[Telepathy] Announce: Mission Control 5.7.1

[Will Thompson]

The "Ack... I've been gritted" release.

tarball: http://telepathy.freedesktop.org/releases/telepathy-mission-control/telepathy-mission-control-5.7.1.tar.gz
signature: http://telepathy.freedesktop.org/releases/telepathy-mission-control/telepathy-mission-control-5.7.1.tar.gz.asc

Enhancements:

• mc-tool: Improved error message for nonexistent accounts

• Removed obsolete mapping of TP_ERROR_NOT_AVAILABLE to
  MC_CONTACT_DOES_NOT_SUPPORT_VOICE_ERROR

Fixes:

• fd.o #24779: CurrentPresence is Offline for online connections not
  implementing SimplePresence (wjt)

-- 
Will