Changes:
* integrated changes from Dushkin (thanks!):
* scrolling the mouse wheel in the taskbar now task switches
* integrated changes from Antti Nykänen (thanks!):
* fixed a crash that occurred on the BSDs (and presumably on other
systems without /proc/self/exe)
* integrated changes from Gregor Imboden (thanks!):
* fixed a crash that ocurrred when there are no focused windows
and alt + F12 is pressed was fixed
* events are always replayed rather than sometimes being eaten
* new windows are no longer given focus
