Description:
------------
Currently spl_autoload_register() is unable to load any functions or class static functions in namespaces.

Reproduce code:
---------------
namespace NS;

function load_class($name) {
	// load class file
}

class Test {
	public static function load_class($name) {
		// load class file
	}
}

spl_autoload_register(array('NS', 'load_class'));

spl_autoload_register(array('NS', 'Test', 'load_class'));

var_dump(spl_autoload_functions());

Expected result:
----------------
Should output an array with the registered namespace function and namespace class static function.

Actual result:
--------------
Fatal error: Uncaught exception 'LogicException' with message 'Passed array does not specify an existing static method' in C:\PHP\file.php:14 Stack trace: #0 C:\PHP\file.php(14): spl_autoload_register(Array) #1 {main} thrown in C:\PHP\file.php on line 14