Update kill.lua

* M.killk/3 -> M.kills/3
Update event.lua

* add tracing code in M.klmove()
Update move.lua

* Remove attempted code of shifting coordiates
  with newdx, newdy, newix, newiy:
  fix them into dx, dy, ix, iy
Update klingon.lua

* Add another trace code in M.klmove()
Update scan.lua

* Change M.srscan() to always enable status report
  and does not ask status report choice
  (This action is not necessarily intuitive)