Merge from Samba 3.0:

Merge from Samba 3.0:

>remove getpwnam() calls from init_sam_from_xxx().
>This means that %u & %g will no longer expand, but %U
>and %G still do.  The payback is that winbindd local
>accounts for users work with 'wbinfo -u' when winbind
>is running on a PDC.

>Fix a nasty mess, and also bug #296. passdb/pdb_ldap.c was not converting
>to/from utf8 for some calls. The libads code gets this right. Wonder why
>the passdb code doesn't use it ?
>Jeremy.
(This used to be commit 1e60bbff70efe3b5c306bc1ef560ee8032b1a852)