Please:
use the standard LDAP membership (via memberUid field
in group) to track membership, not the acl method;
add a concept of ``default/main group'' for a user.

Now the membership of phpgw user are tracked down in
acl tables, so a user have to define it in LDAP
database and also in phpgw.

For a better LDAP integration, would be fine to have
phpgw to use standard (memberUID) LDAP membership, and
also to have a waay to setup a default membership for a
user.


With these things, a phpgw setup will be able to manage
standard LDAP account.