Description:
------------
Theres a difference in namespace passing to an autoloader. That may 
cause several problems and it should be the same.

Reproduce code:
---------------
<?php
  function __autoload($value) {
    echo $value;
  }
  
  new \ns\className;
  
  $a = "\ns\className";
  new $a;
?>

Expected result:
----------------
Same passing of namespace to autoloader as

new \ns\className  ->  ns\className
and
$a = "\ns\className";
new $a;  ->  ns\className

Actual result:
--------------
new \ns\className  ->  autoloader gets ns\className

$a = "\ns\className";
new $a;                -> autoloader gets \ns\className  (the first 
backslash is the problem)