Separates the sharp flag into edge and sharp

Now weapons can properly cause cuts without necessarily having a greater
chance to remove limbs.

Also separates is_sharp, has_edge, and can_puncture.

Conflicts:
	code/__HELPERS/unsorted.dm
	code/modules/mob/living/living_defense.dm
	code/modules/mob/living/silicon/robot/component.dm
	code/modules/mob/living/simple_animal/bees.dm
	code/modules/projectiles/gun.dm
	code/modules/reagents/reagent_containers/syringes.dm
	code/modules/surgery/eye.dm

code/game/objects/structures/inflatable.dm

@@ -110,7 +110,7 @@
 	attackby(obj/item/weapon/W as obj, mob/user as mob)
 		if(!istype(W)) return
 
-		if (is_sharp(W))
+		if (can_puncture(W))
 			visible_message("\red <b>[user] pierces [src] with [W]!</b>")
 			deflate(1)
 		if(W.damtype == BRUTE || W.damtype == BURN)