set a minimum size of 0,0 when an applet is moved in the panel, it still

can happen that it exits from top of the screen but at least it won't
totally destroy the panel layout anymore

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=820917

applet.cpp

@@ -762,6 +762,11 @@ void Applet::flushPendingConstraintsEvents()
         } else if(d->backgroundHints&TranslucentBackground) {
             setBackgroundHints(d->backgroundHints^TranslucentBackground);
         }
+        
+        //ensure the applet won't break the panel layout
+        if ((f == Horizontal || f == Vertical) && !isContainment()) {
+            setMinimumSize(QSizeF(0,0));
+        }
     }
 
     //enforce square size in panels