exposure update

[Marek Lindner]

On Tuesday, 17. June 2008 14:16:39 Holger Freyther wrote:
> it doesn't build. You forgot to add wifi_bar.png. Please try setup.py
> before asking us to do impossible things like updating. You can try that on
> the device as well. ;)

Sure I did run setup.py but it works for me because I have the files (my 
device is fine as well).  ;-)
I created a build folder to test it. It works fine now (check revision 34). 
Sorry for the inconvenience.

Marek