Always set up logging, even if we exit startup early.
Always set up logging, even if we exit startup early.

This allows us to log when we unload modules. Otherwise, early startup
exits would leave LogManager.jsm uninitialized.

mozilla/normandy,Osmose/normandy,mozilla/normandy,Osmose/normandy,Osmose/normandy,mozilla/normandy,Osmose/normandy,mozilla/normandy