Please allow base-files 5.9 in testing

[Santiago Vila <sanvila@unex.es>]

I asked Colin Watson about this problem and he told me that openssh
hardcodes its own PATH. Also, Bug #571086 says that dropbear does not
use login at all. So, the idea of "dropping PATH from /etc/profile and
relying on /etc/login.defs" is currently flawed and will not work at
this point.

Follows changelog:

base-files (5.9) unstable; urgency=medium

 * Changed /etc/profile so that it defines PATH again. Closes: #571086.
   We will have plenty of time to discuss about this after the release
   of squeeze, but for now, this is the safe thing to do.

Thanks.