r23730: Squashed commit of the following:

r23730: Squashed commit of the following:

commit 3941269fa01038fca242a197e8d7c1f234d45ea7
Author: Gerald (Jerry) Carter <jerry@samba.org>
Date:   Thu Jul 5 14:52:03 2007 -0500

    Two fixes for "winbind expand groups".

    (a) Update the counter for the number of new groups to resolve else
        we'll only expand one group member per level and drop the rest.
    (b) Don't reset the num_names counter in winbindd_ads.c:lookup_groupmem()
        or we'll drop the SIDs resolved to names via cache from the resulting
        list.