if the theme wants to paint with the system style just let the proxy paint

svn path=/trunk/KDE/kdelibs/; revision=1216324

widgets/toolbutton.cpp

@@ -330,7 +330,7 @@ void ToolButton::paint(QPainter *painter,
                        const QStyleOptionGraphicsItem *option,
                        QWidget *widget)
 {
-    if (!styleSheet().isNull()) {
+    if (!styleSheet().isNull() || Theme::defaultTheme()->useNativeWidgetStyle()) {
         QGraphicsProxyWidget::paint(painter, option, widget);
         return;
     }