[mingw-qt5-qtbase/f20] (5 commits) ...More missing BuildRequires

[Erik van Pienbroek]

Summary of changes:

  cf5449b... Rebuild against mingw-w64 v4.0rc1 (*)
  38cab45... Update to 5.4.1 (*)
  c496eee... Added some more BuildRequires for mingw*-static libraries (*)
  1d4c887... Fix detection of the static dbus and harfbuzz libraries (*)
  9949868... More missing BuildRequires (*)

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