Add root drive mapping to default config file

[PETREOLLE Sylvain]

Hi Mike,

please dont add / to the default config.
Some reasons no to do that:

- its insecure, since you can write everywhere you want
and some filesystem corruption still exist today.

- it will cause recursion/drive change problems =>
example : what will be the current drive/directory 
if you access the fake C:\windows
 via Z:\home\user\fake_c\windows ?

On my RH box I have a drive called W: that contains wine sources and P:
contains programs/.
If I am in W: (wcmd) and I do 'cd programs', wcmd now says P:\.

Sylvain Petreolle
-at work-