* Take into account the difference between the ScreenWindow's window size and 
  the Screen's screen size when adjusting the position of the window to track
  the bottom of the screen.

* Fill the area of the window beyond the end of the screen with blank characters.
  
* Any attempts to make a selection beyond the end of the screen are treated as if
  the mouse was on the last line of the screen.  

* Minor formatting fixes for long lines


svn path=/trunk/KDE/kdebase/apps/konsole/; revision=749890