implementing password lockout

[Jianliang Lu]

> ----------------------------
> Jim McDonough

I'm working on LDAP backend for this issue and I'll send the patch in these 
days. Two attributes were added in Samba Account: one is "bad password count" 
and another is "last bad password attempt time". The bad password lockout is 
implemented, now I'm working on the lockout duration and reset count time.

Cheers,
Jianliang Lu

TieSse s.p.a.     Ivrea (To) - Italy
j.lu at tiesse.com   luj at libero.it
http://www.tiesse.com