Todo list: account expiration

[Luke Kenneth Casson Leighton]

> a user is either a struct user_info_21 or a struct smb_passwd or a
> sam_disp_info. 

the only one that will give everything is the user_info_21 one
(sam_passwd).  there are mapping functions for the ones you don't want to
bother coding up optimally (if possible).

> 
> If you need help just ask on samba-technical.

yep!

luke (h) you got time to do the ldap.c one?  if the nispass one is
starting, maybe should do ldap too so that the issues are only covered
once.

luke