Mob refactoring.

Updates Bump() code.
Intents now use constants.
Simple animals can now use languages without overriding say().
There is now a difference between being able to smash normal and reinforced walls.
Reworks simple_animal/attackby so that constructs don't need to override it simply to add damage resistance.

code/modules/reagents/Chemistry-Reagents.dm

@@ -370,7 +370,7 @@ datum
 						W.loc = M.loc
 						W.dropped(M)
 					var/mob/living/carbon/slime/new_mob = new /mob/living/carbon/slime(M.loc)
-					new_mob.a_intent = "hurt"
+					new_mob.a_intent = I_HURT
 					new_mob.universal_speak = 1
 					if(M.mind)
 						M.mind.transfer_to(new_mob)

code/modules/reagents/reagent_containers/food/drinks/bottle.dm

@@ -37,7 +37,7 @@
 	if(!target)
 		return
 
-	if(user.a_intent != "hurt" || !isGlass)
+	if(user.a_intent != I_HURT || !isGlass)
 		return ..()
 
 

code/modules/reagents/reagent_containers/syringes.dm

@@ -58,7 +58,7 @@
 			user << "\red This syringe is broken!"
 			return
 
-		if (user.a_intent == "hurt" && ismob(target))
+		if (user.a_intent == I_HURT && ismob(target))
 			if((CLUMSY in user.mutations) && prob(50))
 				target = user
 			syringestab(target, user)