* debian/control:

* debian/control:
  - add build-dep on dh-systemd.
* debian/lightdm.postinst:
  - handle symlinks for systemd service files according to the currently
    selected display manager.
* debian/lightdm.service:
  - add systemd service file, thanks Martin Pitt for the work.closes: #733220
* debian/rules:
  - use dh systemd addon and configure it to not start the lightdm service
    at once.

git-svn-id: svn://anonscm.debian.org/pkg-xfce/goodies/trunk/lightdm@8416 0c9b3bff-18ee-0310-b944-d1aa2700132f