[sugar] Sugar configuration file

[John Watlington]

I noticed a recent change in the behavior of the sugar configuration  
file.
In previous builds (say 385) I was able to delete /home/olpc/.sugar/ 
default/config
and upon reboot the laptop prompted me again for a nickname and color.

With build 406, when I delete /home/olpc/.sugar/default/config, sugar  
never starts
up, instead X continually restarts.   Guess I shouldn't do that.

What is the correct way to reset a laptop to an "out of box" state ?
Deleting all files and directories except nm, logs, and session.info ?

Thanks,
wad