Description:
------------
__autoload is called for every class declaration that extends a parent class, even if the parent declaration file is included.

Reproduce code:
---------------
index.php:
require_once "b.php";
function __autoload($theclass){
	echo "Auto load\n";
	require_once($theclass.".php");
}
$obj = new b();
$obj->hello();
b.php:
require_once "a.php";
class b extends a{
	function hello() { echo "B";}
}
a.php:
class a{
	function hello() {echo "A";}
}


Expected result:
----------------
B

Actual result:
--------------
Auto load
B