Add 1st libldap IPv6 patch (ITS#594) from Stig Venass.
Copyright 2000 Stig Venaas, UNINETT All rights reserved. Redistribution and use in source and binary forms are permitted without restriction or fee of any kind as long as this notice is preserved. The name of UNINETT may not be used to endorse or promote products derived from this software without specific prior written permission. This software is provided ``as is'' without express or implied warranty.