[qt5-qtdoc/f19] (3 commits) ...5.2.0-rc1

[Rex Dieter]

Summary of changes:

  12920fb... 5.2.0-alpha (*)
  b9b98aa... 5.2.0-beta1 (*)
  1202298... 5.2.0-rc1 (*)

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