[Samba] Automatic change of machine passwords seems to brake trust relationship for Windows 7 clients

[Jochen Eggemann]

> There are three ways to change the machine password behavior:
>
> Client-Registry:
> HKLM\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters
> DisablePasswordChange = dword:1
>
> or
>
> Client-Registry:
> HKLM\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters
> MaximumPasswordAge = dword:1000000
>