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/game/objects/items/toys.dm

@@ -873,11 +873,11 @@
 	var/phrase = "I don't want to exist anymore!"
 
 /obj/structure/plushie/attack_hand(mob/user)
-	if(user.a_intent == "help")
+	if(user.a_intent == I_HELP)
 		user.visible_message("<span class='notice'><b>[user]</b> hugs [src]!</span>","<span class='notice'>You hug [src]!</span>")
-	else if (user.a_intent == "hurt")
+	else if (user.a_intent == I_HURT)
 		user.visible_message("<span class='warning'><b>[user]</b> punches [src]!</span>","<span class='warning'>You punch [src]!</span>")
-	else if (user.a_intent == "grab")
+	else if (user.a_intent == I_GRAB)
 		user.visible_message("<span class='warning'><b>[user]</b> attempts to strangle [src]!</span>","<span class='warning'>You attempt to strangle [src]!</span>")
 	else
 		user.visible_message("<span class='notice'><b>[user]</b> pokes the [src].</span>","<span class='notice'>You poke the [src].</span>")
@@ -915,11 +915,11 @@
 	icon_state = "nymphplushie"
 
 /obj/item/toy/plushie/attack_self(mob/user as mob)
-	if(user.a_intent == "help")
+	if(user.a_intent == I_HELP)
 		user.visible_message("<span class='notice'><b>[user]</b> hugs [src]!</span>","<span class='notice'>You hug [src]!</span>")
-	else if (user.a_intent == "hurt")
+	else if (user.a_intent == I_HURT)
 		user.visible_message("<span class='warning'><b>[user]</b> punches [src]!</span>","<span class='warning'>You punch [src]!</span>")
-	else if (user.a_intent == "grab")
+	else if (user.a_intent == I_GRAB)
 		user.visible_message("<span class='warning'><b>[user]</b> attempts to strangle [src]!</span>","<span class='warning'>You attempt to strangle [src]!</span>")
 	else
 		user.visible_message("<span class='notice'><b>[user]</b> pokes the [src].</span>","<span class='notice'>You poke the [src].</span>")

code/game/objects/items/weapons/handcuffs.dm

@@ -74,7 +74,7 @@ var/last_chew = 0
 
 	var/mob/living/carbon/human/H = A
 	if (!H.handcuffed) return
-	if (H.a_intent != "hurt") return
+	if (H.a_intent != I_HURT) return
 	if (H.zone_sel.selecting != "mouth") return
 	if (H.wear_mask) return
 	if (istype(H.wear_suit, /obj/item/clothing/suit/straight_jacket)) return

code/game/objects/items/weapons/kitchen.dm

@@ -40,7 +40,7 @@
 	if(!istype(M))
 		return ..()
 
-	if(user.a_intent != "help")
+	if(user.a_intent != I_HELP)
 		if(user.zone_sel.selecting == "head" || user.zone_sel.selecting == "eyes")
 			if((CLUMSY in user.mutations) && prob(50))
 				M = user

code/game/objects/items/weapons/policetape.dm

@@ -125,7 +125,7 @@
 	breaktape(W, user)
 
 /obj/item/tape/attack_hand(mob/user as mob)
-	if (user.a_intent == "help" && src.allowed(user))
+	if (user.a_intent == I_HELP && src.allowed(user))
 		user.show_viewers("\blue [user] lifts [src], allowing passage.")
 		crumple()
 		lifted = 1
@@ -137,7 +137,7 @@
 
 
 /obj/item/tape/proc/breaktape(obj/item/weapon/W as obj, mob/user as mob)
-	if(user.a_intent == "help" && ((!can_puncture(W) && src.allowed(user))))
+	if(user.a_intent == I_HELP && ((!can_puncture(W) && src.allowed(user))))
 		user << "You can't break the [src] with that!"
 		return
 	user.show_viewers("\blue [user] breaks the [src]!")

code/game/objects/items/weapons/stunbaton.dm

@@ -113,7 +113,7 @@
 	var/mob/living/L = M
 
 	var/target_zone = check_zone(user.zone_sel.selecting)
-	if(user.a_intent == "hurt")
+	if(user.a_intent == I_HURT)
 		if (!..())	//item/attack() does it's own messaging and logs
 			return 0	// item/attack() will return 1 if they hit, 0 if they missed.
 		agony *= 0.5	//whacking someone causes a much poorer contact than prodding them.

code/game/objects/items/weapons/swords_axes_etc.dm

@@ -41,7 +41,7 @@
 
 	log_attack("<font color='red'>[user.name] ([user.ckey]) attacked [M.name] ([M.ckey]) with [src.name] (INTENT: [uppertext(user.a_intent)])</font>")
 */
-	if (user.a_intent == "hurt")
+	if (user.a_intent == I_HURT)
 		if(!..()) return
 		//playsound(src.loc, "swing_hit", 50, 1, -1)
 		if (M.stuttering < 8 && (!(HULK in M.mutations))  /*&& (!istype(H:wear_suit, /obj/item/clothing/suit/judgerobe))*/)

code/game/objects/items/weapons/tools.dm

@@ -460,7 +460,7 @@
 		var/datum/organ/external/S = M:organs_by_name[user.zone_sel.selecting]
 
 		if (!S) return
-		if(!(S.status & ORGAN_ROBOT) || user.a_intent != "help")
+		if(!(S.status & ORGAN_ROBOT) || user.a_intent != I_HELP)
 			return ..()
 
 		if(istype(M,/mob/living/carbon/human))