Removed IS_SYNTHETIC and REGENERATES_LIMBS flags.

Moved some organ code around, added icons and limbs for IPC, added IPC limb manufacturer.
Reimplementing checks in place of IS_SYNTHETIC.
Rebalancing EMP a bit for IPC.

code/modules/organs/misc.dm

@@ -0,0 +1,73 @@
+//CORTICAL BORER ORGANS.
+/obj/item/organ/borer
+	name = "cortical borer"
+	parent_organ = "head"
+	vital = 1
+
+/obj/item/organ/borer/process()
+
+	// Borer husks regenerate health, feel no pain, and are resistant to stuns and brainloss.
+	for(var/chem in list("tricordrazine","tramadol","hyperzine","alkysine"))
+		if(owner.reagents.get_reagent_amount(chem) < 3)
+			owner.reagents.add_reagent(chem, 5)
+
+	// They're also super gross and ooze ichor.
+	if(prob(5))
+		var/mob/living/carbon/human/H = owner
+		if(!istype(H))
+			return
+
+		var/datum/reagent/blood/B = locate(/datum/reagent/blood) in H.vessel.reagent_list
+		blood_splatter(H,B,1)
+		var/obj/effect/decal/cleanable/blood/splatter/goo = locate() in get_turf(owner)
+		if(goo)
+			goo.name = "husk ichor"
+			goo.desc = "It's thick and stinks of decay."
+			goo.basecolor = "#412464"
+			goo.update_icon()
+
+/obj/item/organ/borer
+	name = "cortical borer"
+	icon = 'icons/obj/objects.dmi'
+	icon_state = "borer"
+	organ_tag = "brain"
+	desc = "A disgusting space slug."
+
+/obj/item/organ/borer/removed(var/mob/living/user)
+
+	..()
+
+	var/mob/living/simple_animal/borer/B = owner.has_brain_worms()
+	if(B)
+		B.leave_host()
+		B.ckey = owner.ckey
+
+	spawn(0)
+		qdel(src)
+
+//VOX ORGANS.
+/obj/item/organ/stack
+	name = "cortical stack"
+	parent_organ = "head"
+	robotic = 2
+	vital = 1
+	var/backup_time = 0
+	var/datum/mind/backup
+
+/obj/item/organ/stack/process()
+	if(owner && owner.stat != 2 && !is_broken())
+		backup_time = world.time
+		if(owner.mind) backup = owner.mind
+
+/obj/item/organ/stack/vox
+
+/obj/item/organ/stack/vox/stack
+
+/obj/item/organ/stack
+	name = "cortical stack"
+	icon_state = "brain-prosthetic"
+	organ_tag = "stack"
+	robotic = 2
+
+/obj/item/organ/stack/vox
+	name = "vox cortical stack"