passwords.py patch

[Matthias Dieter Wallnöfer]

Hi Nadya,

I've looked into it and it was/is far less work to implement the default 
"minPwdAge" than I've expected - therefore I first was a bit dure about it.

The most changes are needed in the "blackbox.passwords" test. I will 
push the stuff when I'm done.

Matthias

Nadezhda Ivanova wrote:
> Yes, we always restore the original value of minPwdAge.
> On Thu, 2010-07-01 at 15:11 +0300, Nadezhda Ivanova wrote:
>
>     > Hi Matthias,
>     > Attached is my proposed patch to reset minPwdAge so no manual
>     resetting is
>     > needed against windows.
>
>