/**
	 * get_final_url()
	 * Gets the address that the URL ultimately leads to.
	 * Returns $url itself if it isn't a redirect.
	 *
	 * @param string $url
	 * @return string
	 */
	function get_final_url($url){
		$redirects = hwd_vs_tools::get_all_redirects($url);
		if (count($redirects)>0){
			return array_pop($redirects);
		} else {
			return $url;
		}
	}