Correct URL to license

Make-common.dist

@@ -4,7 +4,7 @@
 # 
 # Redistribution and use in source and binary forms are permitted only
 # as authorized by the OpenLDAP Public License.  A copy of this
-# license is available at http://www.boolean.net/ldap/license.html or
+# license is available at http://www.OpenLDAP.org/license.html or
 # in file LICENSE in the top-level directory of the distribution.
 # 
 # This work is derived from the University of Michigan LDAP v3.3