KDialogBase patch - make the first widget initially focused

[Mirko Boehm]

<quote who="Lubos Lunak">
...
>  Another try: The KDialogBase patch is almost the same, and there's
> additional
> patch for KActiveLabel, as that one IMHO shouldn't actually get focus,
> as  it's a label after all, even though based on QTextBrowser.
>
>  Is it ok to commit it?
Fine with me, of course. The patch creates definitly better behaviour than
before.

--Mirko.