Added more severe consequences of radioactivity.

A very high amount of radioactivity can actually kill you.
circular distance pt1: plmove & monmove & rl_dist
Added option to allow/disallow mutation by radiation.

Also some rebalancing and formatting.
circularize light sources, apply diagonal cost adjustment to npc movement
Option added
Merge branch 'mo_betta_headlights' into opt_circledist-wip
Option documented
Merge remote branch 'origin/master' into opt_circledist-wip
Nuked #debug-ifs. Restored lightarc shape. Make lightsource downgrade less cpu intensive squares within huge-assed lava fields
fix build error
+signoff
Updated to attach resources to executable
avoid use of pow() in distance calculation, speeding them up an order of magnitude (thanks quietus!)
Increased Auto Safe Mode max duration to 100
Made Gradual night light on by default

We have a fancy realistic light effect, lets use it (I'm not even sure
why this is even an option, the false version is horribly unrealistic).
Made bites no longer infect when canceled by armor

Also made bite infection chance based on damage dealt.
Fixed cloak materials

Addresses issue #1359
Make blood filter remove painkiller and stimulatnt totals
Make blood analysis detect meth, and blood filter remove "High on meth" effect
Make blood filter remove all other drug based diseases