Description:
------------
When you subclass RecursiveFilterIterator and change the constructor's 
signature you get Catchable fatal errors and warnings about missing 
arguments when iterating.

Reproduce code:
---------------
class AutoLoaderFilterIterator extends RecursiveFilterIterator
{
	private $excludes = array();
	
	public function __construct(RecursiveIterator $iterator, array $excludes)
	{
		parent::__construct($iterator);
		$this->excludes = $excludes;
	}
	
	public function accept()
	{
		return true;
	}
}

$it = new RecursiveIteratorIterator(
	new AutoLoaderFilterIterator(
		new RecursiveDirectoryIterator('/path/to/dir/hierarchy')
		,array()
	)
);
foreach($it as $file)
{
	echo $file->getFilename()."<br/>";
}

Expected result:
----------------
A list of files

Actual result:
--------------
For each iteration a Catchable fatal error and a Warning is issued

Catchable fatal error: Argument 2 passed to 
AutoLoaderFilterIterator::__construct() must be an array, none given in 
RecursiveFilterIterator_bug.php on line 20

Warning: Missing argument 2 for AutoLoaderFilterIterator::__construct() 
in RecursiveFilterIterator_bug.php on line 20

(Line 20 being the constructor declaration of AutoLoaderFilterIterator)