(ITS#7018) unique URI's host part must be empty

[masarati@aero.polimi.it]

Full_Name: Pierangelo Masarati
Version: master,re24
OS: irrelevant
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (93.144.24.27)
Submitted by: ando


If empty "host" part is checked, misconfigurations like in
<http://www.openldap.org/lists/openldap-technical/201108/msg00116.html>
would be easily detected.  A fix is coming.

p.