Fix cloning (#1610)

-fix clones spawning dead
-fix #1603
-fix welding tools ignoring robotic limb damage cap

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

@@ -313,6 +313,9 @@
 			// Welder is switched off!
 			user << "<span class='warning'>You need to light the welding tool, first!</span>"
 			return
+		if(S.brute_dam > ROBOLIMB_SELF_REPAIR_CAP)
+			user << "<span class='warning'>The damage is far too severe to patch over externally.</span>"
+			return			
 		if (src.remove_fuel(0))
 			// Use a bit of fuel and repair
 			S.heal_damage(15,0,0,1)