D9713: Add script to unlock a broken session via ConsoleKit.

[Tobias C . Berner]

tcberner added a reviewer: FreeBSD.

REPOSITORY
  R133 KScreenLocker

REVISION DETAIL
  https://phabricator.kde.org/D9713

To: tcberner, graesslin, #freebsd
Cc: graesslin, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas, apol, mart