Description:
------------
When extending the DB_DataObject class using PHP 4.3.3, 
pass-by-reference calls to class methods don't work. 
After removing the call to overload() at the bottom of 
DB_DataObject.php, references work as expected. The 
following comments at the bottom of DB_DataObject 
allude to this:

// technially 4.3.2RC1 was broken!!
// looks like 4.3.3 may have problems too.... 
if ((phpversion() != '4.3.2-RC1') && (version_compare( 
phpversion(), "4.3.1") > 0)) {
   overload('DB_DataObject');
   $GLOBALS['_DB_DATAOBJECT']['OVERLOADED'] = true;     
}

Reproduce code:
---------------
require_once("DB/DataObject.php");

class no_problem
{
	function pass_by_reference(&$ref)
	{
		$ref = "Pass by reference works";
	}
}

class problem extends DB_DataObject
{
	function pass_by_reference(&$ref)
	{
		$ref = "Pass by reference works";
	}
}

$good = &new no_problem();
$bad = &new problem();

$message = "Pass by reference does not work!";
$good->pass_by_reference($message);
print "$message\n";

$message = "Pass by reference does not work!";
$bad->pass_by_reference($message);
print "$message\n";

Expected result:
----------------
Pass by reference works 
Pass by reference works 

Actual result:
--------------
Pass by reference works 
Pass by reference does not work!