The Terminator Update

This updates synthetic limbs to make more sense. It tweaks what you can 'see' when examining people. If someone has a robotic leg but is wearing pants, how would you know that? If someone has a burn on their arm, but their jumpsuit sleeves down, how would you know that? If someone has a replacement Vey-Med arm, how would you know it's robotic? It also treats examining FBPs more 'realistically'. If they are covered except for their head, it doesn't matter if their whole body is Bishop robotic. If their head is Vey-Med and that's all you can see, they just look human to you.

So FBP manufacturers can have a 'lifelike' var set. Vey-Med has this. This makes the limbs not show obviously non-organic damage (dents) until they are more damaged and start showing wires/metal. Attempts to treat these limbs with medical stuff results in a different message. Manufacturers can also set individual blood colors. Vey-Med blood is now white, ala Bishop from Aliens.

isSynthetic proc = Is the mob actually synthetic, as in, mechanically for breathing/tox purposes?
looksSynthetic proc = Does the mob display outward signs of being synthetic? Based on head and torso and what's revealed.

Other fixes:
You can no longer attach limbs to non-existent parents. You can't give somone a foot on a leg that doesn't exist.
You can't attach fleshy limbs to robotic ones. BODIES DO NOT WORK THAT WAY.
'Synthetic' var on humans points to manufacturer if you need to grab it quickly. isSynthetic returns this as well.
Robolimb count (and thus overheating speed) updates whenever your limbs change.
Lifelike FBPs do not show a 'system offline glyph'.
isSynthetic and looksSynthetic moved to human_helpers becasue they were defined on human in mob_helpers
Nanopaste correctly repairs limbs using the new procs (both burn and brute, making it an expensive welder+wire)

code/game/objects/effects/decals/Cleanable/humans.dm

@@ -17,6 +17,7 @@ var/global/list/image/splatter_cache=list()
 	var/base_icon = 'icons/effects/blood.dmi'
 	blood_DNA = list()
 	var/basecolor="#A10808" // Color when wet.
+	var/synthblood = 0
 	var/list/datum/disease2/disease/virus2 = list()
 	var/amount = 5
 	var/drytime
@@ -61,9 +62,9 @@ var/global/list/image/splatter_cache=list()
 /obj/effect/decal/cleanable/blood/update_icon()
 	if(basecolor == "rainbow") basecolor = "#[get_random_colour(1)]"
 	color = basecolor
-	if(basecolor == SYNTH_BLOOD_COLOUR)
-		name = "oil"
-		desc = "It's black and greasy."
+	if(synthblood)
+		name = "synthetic blood"
+		desc = "It's quite greasy."
 	else
 		name = initial(name)
 		desc = initial(desc)

code/game/objects/items/stacks/medical.dm

@@ -37,8 +37,13 @@
 				user << "<span class='warning'>You can't apply [src] through [H.wear_suit]!</span>"
 				return 1
 
-		if(affecting.robotic >= ORGAN_ROBOT)
-			user << "<span class='warning'>This isn't useful at all on a robotic limb..</span>"
+		if(affecting.robotic == ORGAN_ROBOT)
+			user << "<span class='warning'>This isn't useful at all on a robotic limb.</span>"
+			return 1
+
+		if(affecting.robotic >= ORGAN_LIFELIKE)
+			user << "<span class='warning'>You apply the [src], but it seems to have no effect...</span>"
+			use(1)
 			return 1
 
 		H.UpdateDamageIcon()

code/game/objects/items/stacks/nanopaste.dm

@@ -27,19 +27,12 @@
 		var/mob/living/carbon/human/H = M
 		var/obj/item/organ/external/S = H.get_organ(user.zone_sel.selecting)
 
-		if(S.open == 1)
-			if (S && (S.robotic >= ORGAN_ROBOT))
-				if(S.get_damage())
-					S.heal_damage(15, 15, robo_repair = 1)
-					H.updatehealth()
-					use(1)
-					user.visible_message("<span class='notice'>\The [user] applies some nanite paste at[user != M ? " \the [M]'s" : " \the"][S.name] with \the [src].</span>",\
-					"<span class='notice'>You apply some nanite paste at [user == M ? "your" : "[M]'s"] [S.name].</span>")
-				else
-					user << "<span class='notice'>Nothing to fix here.</span>"
+		if (S && (S.robotic >= ORGAN_ROBOT))
+			if(S.robo_repair(15, "omni", 0, src, user))
+				use(1)
+				user.visible_message("<span class='notice'>\The [user] applies some nanite paste on [user != M ? "\the [M]'s" : "their"] [S.name].</span>",\
+				"<span class='notice'>You apply some nanite paste on [user == M ? "your" : "[M]'s"] [S.name].</span>")
 		else
 			if (can_operate(H))
 				if (do_surgery(H,user,src))
 					return
-			else
-				user << "<span class='notice'>Nothing to fix in here.</span>"