Second part of fix for bug #8443 - Default user entry is set to minimal permissions on incoming ACL change with no user specified.
Be smarter about setting default permissions when a ACL_USER_OBJ isn't given. Use the principle of least surprises for the user.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Sep 9 00:26:08 CEST 2011 on sn-devel-104
(cherry picked from commit
e30b8c72def13e2abc14858ea64eb849ea665b80)
(cherry picked from commit
589bea9d314e14b8a493acdb31104f731073cafa)