This had the unfortunate side-effect that focus was reported to change
(but it didn't) just because the qtabbar was shown.
Found by clicking the different categories on the left-hand side of the
options dialog in Qt Creator.
So, what happened was that clicking "Text Editor" would move the
accessibility focus (that the AT client saw) to the "Font & Colors" tab)
Change-Id: I19a508f6a32a77696079d24c3c6408cb6c3d9fd5
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
89f862ab10