Alien Ruin fix, various cherrypicked upstream fixes

Also adds new buildmode

code/_onclick/ai.dm

@@ -10,9 +10,6 @@
 	Note that AI have no need for the adjacency proc, and so this proc is a lot cleaner.
 */
 /mob/living/silicon/ai/DblClickOn(var/atom/A, params)
-	if(check_click_intercept(params,A))
-		return
-
 	if(control_disabled || incapacitated())
 		return
 

code/_onclick/click.dm

@@ -272,6 +272,7 @@
 	animals lunging, etc.
 */
 /mob/proc/RangedAttack(atom/A, params)
+	SEND_SIGNAL(src, COMSIG_MOB_ATTACK_RANGED, A, params)
 /*
 	Restrained ClickOn
 

code/_onclick/item_attack.dm

@@ -56,6 +56,7 @@
 
 /obj/item/proc/attack(mob/living/M, mob/living/user)
 	SEND_SIGNAL(src, COMSIG_ITEM_ATTACK, M, user)
+	SEND_SIGNAL(user, COMSIG_MOB_ITEM_ATTACK, M, user)
 	if(item_flags & NOBLUDGEON)
 		return
 
@@ -139,7 +140,7 @@
 // Click parameters is the params string from byond Click() code, see that documentation.
 /obj/item/proc/afterattack(atom/target, mob/user, proximity_flag, click_parameters)
 	SEND_SIGNAL(src, COMSIG_ITEM_AFTERATTACK, target, user, proximity_flag, click_parameters)
-
+	SEND_SIGNAL(user, COMSIG_MOB_ITEM_AFTERATTACK, target, user, proximity_flag, click_parameters)
 
 /obj/item/proc/get_clamped_volume()
 	if(w_class)

code/_onclick/observer.dm

@@ -1,7 +1,4 @@
 /mob/dead/observer/DblClickOn(var/atom/A, var/params)
-	if(check_click_intercept(params,A))
-		return
-
 	if(can_reenter_corpse && mind && mind.current)
 		if(A == mind.current || (mind.current in A)) // double click your corpse or whatever holds it
 			reenter_corpse()						// (cloning scanner, body bag, closet, mech, etc)

code/_onclick/other_mobs.dm

@@ -86,6 +86,7 @@
 	return 0
 
 /mob/living/carbon/human/RangedAttack(atom/A, mouseparams)
+	. = ..()
 	if(gloves)
 		var/obj/item/clothing/gloves/G = gloves
 		if(istype(G) && G.Touch(A,0)) // for magic gloves
@@ -96,6 +97,7 @@
 
 	if(isturf(A) && get_dist(src,A) <= 1)
 		src.Move_Pulled(A)
+		return
 
 /*
 	Animals & All Unspecified