Description:
------------
THE ldap_rename function DOES NOT support renaming dn !
in fact it's much an ldap_move function than ldap_rename instead of C API !

If you try to rename an object such as :

$objectdn = "uniqueID=MyObject-12".$parentDN;
$newObjectdn = "uniqueID=MyObject-12a";
$parentDN = "ou=MyObjectClass,ou=mycontainer,ou=mycompagny";
the function:
ldap_rename($LDAPds,$objectdn,$newObjectdn,$parentDN,true);
or 
ldap_rename($LDAPds,$objectdn,$newObjectdn,NULL,true);
will NOT work and will not return any error message by 
ldap_error($LDAPds);

Reproduce code:
---------------
//If you try to rename an object such as :

$objectdn = "uniqueID=MyObject-12".$parentDN;
$newObjectdn = "uniqueID=MyObject-12a";
$parentDN = "ou=MyObjectClass,ou=mycontainer,ou=mycompagny";
//the function:
ldap_rename($LDAPds,$objectdn,$newObjectdn,$parentDN,true);
//or 
ldap_rename($LDAPds,$objectdn,$newObjectdn,NULL,true);
//will NOT work and will not return any error message by 
ldap_error($LDAPds);
// return no error


Expected result:
----------------
modification of object dn

Actual result:
--------------
no modification