Description:
------------
Class names are case insensitiv. __autoload always get lower-case class name.

I think, this is not very important - but unusual ;-)

Reproduce code:
---------------
File 'case_insensitiv_class.php':

<?php
class CASE_insensitiv_CLASS {
  function __construct() {
    echo '__construct of ' . __CLASS__ . '<br>';
  }
}
?> 

File 'case_insensitiv_main.php':

<?php
function __autoload($className) {
  echo '__autoload of ' . $className . '<br>';
  require_once $className . '.php';
}
$test = new cAsE_InsEnsItIv_clAss;
?>


Expected result:
----------------
__autoload of cAsE_InsEnsItIv_clAss

and then some error ;-)

Actual result:
--------------
__autoload of case_insensitiv_class
__construct of case_insensitiv_class