Sub-pixel positioning

[kde at bartcoppens.be]

Quoting Adrian Page <adrian at pagenet.plus.com>: 
> Override x11Event() for KisCanvas and handle the move events before the  
> default behaviour gets a chance. Attached patch works but is still in 'hack' 
> mode. :-) 
 
The version you committed works very nice for painting, but it slows down the 
moving of a layer/paintdevice. I think this is because my computer is too slow 
to move the layer each time the mouse moves a pixel. 
 
Bart Coppens