PPC vs. x86

[Graham Percival]

Would it be possible to include a small check in the OSX versions which 
would display an error message if people tried to run the wrong kind of 
binary?  We've had two people trying to run the Intel version on a PPC 
chip, and the current error message is not at all helpful.

In bash script, I'd do this:
uname -a | grep -c PPC

I'm not certain how to fit that into python, though.

Cheers,
- Graham