[xmonad] darcs patch: Decoration: fix mouse dragging jump ...

I'm not so sure if I should push this patch. It works, but I don't understand why. If you do, please let me know. Andrea Fri Feb 8 21:41:20 CET 2008 Andrea Rossato <andrea.rossato@unibz.it> * Decoration: fix mouse dragging jump ... ... I don't have a better description... when starting to grab the window by clicking on the decoration, you could see the window's origin jumping to the pointer position. This should be fixed now (but I'm not so sure... please report any window's strange movement you may see).