[TIMOB-160] iPhone - status and statusText not working on HTTPClient object

When handling a response in HTTPClient's onreadystatechange handler function, the client object's status and statusText properties do not appear to be populated. Change the following lines in the XHR test in the Kitchen Sink to reproduce quickly:

    var c = Titanium.Network.createHTTPClient();

// set on ready state change function
c.onreadystatechange = function()
{
    Titanium.API.debug('>>>>>>>>>>>>>>>>>>>>>>>> readyState = ' + this.readyState);
    Titanium.API.debug('>>>>>>>>>>>>>>>>>>>>>>>> status = ' + this.status);
    Titanium.API.debug('>>>>>>>>>>>>>>>>>>>>>>>> statusText = ' + this.statusText);
    if (this.readyState == 4)
    {

        document.getElementById('html').innerHTML = this.responseText;
    }
};
// open the client
c.open('GET','http://www.google.com');

// send the data
c.send();