Declare some more undeclared variables
Declare some more undeclared variables

So they don't pollute the global object.

Arteris/node-x11,15lyfromsaturn/node-x11,Arteris/node-x11,sidorares/node-x11,mgechev/node-x11,santigimeno/node-x11,sidorares/node-x11,wpp2014/node-x11,mgechev/node-x11,santigimeno/node-x11,15lyfromsaturn/node-x11,wpp2014/node-x11,15lyfromsaturn/node-x11,wpp2014/node-x11,sidorares/node-x11