Fix flicker caused by left/right/bottom borders, and by PE_WindowFrame.
Fix flicker caused by left/right/bottom borders, and by PE_WindowFrame.


KDE/qtcurve,gnufabio/qtcurve,gnufabio/qtcurve,KDE/qtcurve,KDE/qtcurve,gnufabio/qtcurve,gnufabio/qtcurve,KDE/qtcurve