- missing code from windows impl (required for Qt::WindowDoesNotAcceptFocus to work properly)
added missing MouseActivateWindowEvent
Merge commit '97084a64173db84f1c4a72a2de9479e48f8b68b0' into memleaks-instrumentation

* commit '97084a64173db84f1c4a72a2de9479e48f8b68b0':
  added missing MouseActivateWindowEvent
  - missing code from windows impl (required for Qt::WindowDoesNotAcceptFocus to work properly)