[qt-creator/f18] (3 commits) ...2.6.1 release

[Jaroslav Reznik]

Summary of changes:

  1ccfe6d... 2.5.2 release (*)
  52b9fb1... 2.6.0 beta (*)
  2d5c403... 2.6.1 release (*)

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