[imp] pref_uid and realm

[M Z Rahman]

Hi,

> If you get HEAD or RELENG-3 it will be there. It will be in 3.0 when it comes
> 
> out.

I have no idea what HEAD and RELENG-3 means. If I update from CVS with 'cvs
update -d' will I get it?

Thanks.

Zia