Shortwave and Relay Tweaks

- Shortwaves will now transmit to all connected Z levels
- Relays will now update their connected Z level if moved (useful for relays on shuttles)

Code ported from Baystation.

code/game/machinery/telecomms/telecomunications.dm

@@ -371,6 +371,10 @@ var/global/list/obj/machinery/telecomms/telecomms_list = list()
 	var/broadcasting = 1
 	var/receiving = 1
 
+/obj/machinery/telecomms/relay/forceMove(var/newloc)
+	. = ..(newloc)
+	listening_level = z
+
 /obj/machinery/telecomms/relay/receive_information(datum/signal/signal, obj/machinery/telecomms/machine_from)
 
 	// Add our level and send it back

code/game/objects/items/devices/radio/radio.dm

@@ -419,7 +419,7 @@ var/global/list/default_medbay_channels = list(
 			subspace_transmission = FALSE
 			return Broadcast_Message(connection, M, voicemask, pick(M.speak_emote),
 					  src, message, displayname, jobname, real_name, M.voice_name,
-					  signal.transmission_method, signal.data["compression"], list(position.z), connection.frequency,verb,speaking)
+					  signal.transmission_method, signal.data["compression"], GetConnectedZlevels(position.z), connection.frequency,verb,speaking)
 
   /* ###### Intercoms and station-bounced radios ###### */
 
@@ -478,10 +478,9 @@ var/global/list/default_medbay_channels = list(
 
 	//THIS IS TEMPORARY. YEAH RIGHT
 	if(!connection)	return 0	//~Carn
-
 	return Broadcast_Message(connection, M, voicemask, pick(M.speak_emote),
 					  src, message, displayname, jobname, real_name, M.voice_name,
-					  filter_type, signal.data["compression"], list(position.z), connection.frequency,verb,speaking)
+					  filter_type, signal.data["compression"], GetConnectedZlevels(position.z), connection.frequency,verb,speaking)
 
 
 /obj/item/device/radio/hear_talk(mob/M as mob, msg, var/verb = "says", var/datum/language/speaking = null)