Description:
------------
With 5.0.5, a SOAP client getting a "base64Binary" datatype is not performing the appropriate decoding.

Since Bug #32139 (base64binary encode/decode) this issue was marked fixed.

With 5.1.0RC1, autodecode is present, but returns a wrong decode.

- PHP 5.0.5 : 
  -> SoapClient doesn't autodecode base64binary, it returns a base64 encoded string.
  -> base64_decode() did a wrong decode.
  -> GET EXPECTED results if use of mb_convert_encoding().

- PHP 5.1.0RC1 :
  -> SoapClient autodecode base64binary,
  -> but return a wrong decoded string


base64binary encoded string to be decode is not short, so I don't put it in this report. Request if necessary. 

Reproduce code:
---------------
header('Content-Type: text/xml; charset=UTF-8');
$client = new SoapClient( 
        "http://192.168.72.75/MSWCONFIGWEBSERVICE/Deployment.asmx?WSDL", array('trace' => 1)
    ); 

$param = array(
		'schemaVersion' => 1,
		'user' => array(
			'Username' => "myuser",
			'Password' => "mypassword",
			'CultureID' => 1033));


$result=$client->LoadConfiguration($param);

//PHP 5.0.5 : SoapClient doesn't autodecode base64binary
// return a base64 encoded string :
//PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+PENv bmZpZ3VyYXRpb24+PEtleSBuYW1lPSJ.....

//PHP 5.0.5 : base64_decode() did a wrong decode (*)
$conf=base64_decode($result->LoadConfigurationResult->Configuration);
echo $conf;

//PHP 5.0.5 : GET EXPECTED results if use of mb_convert_encoding()
$conf=mb_convert_encoding($result->LoadConfigurationResult->Configuration,"UTF-8","BASE64");
echo $conf;

//PHP 5.1.0RC1 : SoapClient autodecode base64binary, but return a wrong decoded string ( same as *)
echo $result->LoadConfigurationResult->Configuration;

Expected result:
----------------
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Configuration>
	  <Key name="CharacterSetAliases" default="">
	  	  <PropertyList duplicates="true">
	  	  	  <Property name="iso-646" type="string" value="us-ascii" /> 
	  	  </PropertyList>
	  </Key>
...

Actual result:
--------------
This is the content of $result->LoadConfigurationResult->Configuration :

<?xml version="1.0" encoding="UTF-8" standalone="no"?><Co??????Ʌѥ????-?䁹?????
??Ʌ?ѕ?M?????͕̈?????ձ??????C?&?W'G?Ɨ7BGWƖ6FW3?'G'VR#??&?W'G???S
...