Integrated circuit fixes and code improvements

code/modules/integrated_electronics/core/pins.dm

@@ -24,12 +24,18 @@ D [1]/  ||
 	var/datum/weakref/data  // This is a weakref, to reduce typecasts.  Note that oftentimes numbers and text may also occupy this.
 	var/list/linked = list()
 	var/io_type = DATA_CHANNEL
+	var/pin_type			// IC_INPUT, IC_OUTPUT, IC_ACTIVATOR - used in saving assembly wiring
+
+
+/datum/integrated_io/New(loc, _name, _data, _pin_type)
+	name = _name
+	if(_data)
+		data = _data
+	if(_pin_type)
+		pin_type = _pin_type
+
+	holder = loc
 
-/datum/integrated_io/New(newloc, name1, new_data)
-	name = name1
-	if(new_data)
-		data = new_data
-	holder = newloc
 	if(!istype(holder))
 		message_admins("ERROR: An integrated_io ([name]) spawned without a valid holder!  This is a bug.")