Add torped.lua

* Photon torpedo control, initial checkin
Add torped.lua

* Remove C code remnants
Update init.lua

* Add trek.torped initialization
  (This will be the final module for initial porting!)
Update play.lua

* Enable trek.torped.torped()
Update torped.lua

* Misc fixes and trace code added
Update event.lua

* Fix variable scope of "course" in M.autover()