Ported parts of the BS12 organ system.

This includes:
- Individual wounds
- Dismemberment
- Bone breaking

It also adds configuration values to config/game_options.txt to control the point at which bones break and limbs are cut off.

Does not include surgery or bleeding yet.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4720 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/objs.dm

@@ -11,6 +11,7 @@
 	animate_movement = 2
 	var/throwforce = 1
 	var/list/attack_verb = list() //Used in attackby() to say how something was attacked "[x] has been [z.attack_verb] by [y] with [z]"
+	var/sharp = 0 // whether this object cuts
 
 /obj/proc/process()
 	processing_objects.Remove(src)