[lightdm/f17] (4 commits) ...default to alternatives-provided greeter

[Rex Dieter]

Summary of changes:

  c7539a0... import (*)
  c287d30... Requires: lightdm-greeter = 1.2 (*)
  f275cf8... - check if lightdm user exists, before creating him - reset (*)
  9056262... default to alternatives-provided greeter (*)

(*) This commit already existed in another branch; no separate mail sent