Turret upgrade

It turns out that labs and military facilities used automated pipe-SMGs to defend themselves.  I think DoD can do better than that.

This upguns the SMG turret to use an MP5 (much more accurate, less recoil, better burst size) and gives the military DX-enhanced and M4-equipped turrets, which load twice as much 5.56, illuminate out to 6 tiles away, and have a max engagement range of 36 tiles.  (Yes, they can & will shoot you in the next map tile if you approach during the day.  They're pretty good at it too.)  They won't instakill through Kevlar, but they don't tickle either..