docs: function set_cookies(url, cookies) {
  	if(is.string(cookies)) {
  		cookies = [cookies];
  	}
  	debug.assert(url).is('object');
  	debug.assert(url.host).is('string');
  	debug.assert(cookies).is('array');
  
  	//debug.log('Saving cookies for host = ', url.host);
  
  	if(!is.array(_cookies[url.host])) {
  		_cookies[url.host] = cookies;
  		//debug.log('Saved new cookies as: ', _cookies[url.host]);
  		return;
  	}
  
  	var tmp = {};
  
  	function save_cookie(cookie) {
  		var i = cookie.indexOf('=');
  		var name = cookie.substr(0, ((i >= 1) ? i : cookie.length));
  		tmp[name] = cookie;
  	}
  
  	ARRAY(_cookies[url.host]).forEach(save_cookie);
  	ARRAY(cookies).forEach(save_cookie);
  
  	_cookies[url.host] = ARRAY(Object.keys(tmp)).map(function(key) { return tmp[key]; }).valueOf();
  
  	//debug.log('Saved new cookies as: ', _cookies[url.host]);
  }