Description:
------------
wddx_deserialize/wddx_unserialize does not deserialize the array keys correctly

Array with the following keys will not deserialize correctly in PHP 5.2.1 & 5.2.2 but did deserialize correctly in PHP4

array('1.1' => 'One 1','1.2' => 'One 2') 

array keys will become 1  and therefor the 2nd key 1.2 will overwrite the first key 1.1

Reproduce code:
---------------
<?php
$data = array(
  'somearray' => array('1.1' => 'One 1','1.2' => 'One 2')
);

echo "<pre>Should be:\n";
var_dump(array('data'=>$data));
echo '</pre>';

echo "<pre>Is:\n";
var_dump(wddx_deserialize(wddx_serialize_vars('data')));
echo '</pre>';
?>

Expected result:
----------------
array(1) {
  ["data"]=>
  array(1) {
    ["somearray"]=>
    array(2) {
      ["1.1"]=>
      string(5) "One 1"
      ["1.2"]=>
      string(5) "One 2"
    }
  }
}

Actual result:
--------------
array(1) {
  ["data"]=>
  array(1) {
    ["somearray"]=>
    array(1) {
      [1]=>
      string(5) "One 2"
    }
  }
}