[hplip/f14/master] (6 commits) ...Merge branch 'f13' into f14

[Tim Waugh]

Summary of changes:

  3e7f8d1... Catch D-Bus exceptions in fax dialog (bug #645316). (*)
  7ba5478... Prevent hpaio segfaulting on invalid URIs (bug #649092). (*)
  d5c7c97... Another missing newline in filter output (Ubuntu #418053). (*)
  7ec9168... Fixed incorrect signal name in setup dialog (bug #653626). (*)
  44b71e7... Enable D-Bus threading (and require pygobject2) (bug #60093 (*)
  30383e0... Merge branch 'f13' into f14

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