Bug 854107 - Lazy load more normal JS objects r=margaret
Bug 854107 - Lazy load more notification-based objects r=margaret
Bug 853361 - moving by words is inconsistent, r=roc
Bug 854604 - Null-check funobj. r=mrbkap

I've audited all the places where we instantiate an XPCCallContext with more
than just (cx, {NATIVE,JS}_CALLER), and the toString hook is the only place
where we don't check IsValid() or something that depends on it.