[nepomuk-core/f17] (4 commits) ...respin isEmpty_crash based on 32b44881 upstream commit (#858271)

[Rex Dieter]

Summary of changes:

  8f061da... proposed patch to fix/workaround isEmpty crash (#858271) (*)
  2517cb1... +changelog (*)
  f757e20... respin isEmpty_crash patch to guard against NULL (#858271) (*)
  5b44a68... respin isEmpty_crash based on 32b44881 upstream commit (#85 (*)

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