Changes to Syndicate Radios, which fixes Issue 595. Now if a an radio doesn't have the Syndicate encryption on it, it won't receive any messages over the Syndicate channel(If I can learn TCOMMs a bit better I'll try to make it a per-message basis)

Changed 'traitor' headsets to 'syndicate' headsets to have it make a bit more sense. Syndicate encryption is tied to the keys, so anything with a Syndicate Key can hear the Syndicate Channel. 
Also, added 2 intercoms to the Nuke OP shuttle that are on the Syndicate frequency and have the needed encryption.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3991 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/gamemodes/nuclear/nuclear.dm

@@ -215,7 +215,7 @@
 /datum/game_mode/proc/equip_syndicate(mob/living/carbon/human/synd_mob)
 	var/radio_freq = SYND_FREQ
 
-	var/obj/item/device/radio/R = new /obj/item/device/radio/headset(synd_mob)
+	var/obj/item/device/radio/R = new /obj/item/device/radio/headset/syndicate(synd_mob)
 	R.set_frequency(radio_freq)
 	synd_mob.equip_if_possible(R, synd_mob.slot_ears)
 

code/game/objects/radio/encryptionkey.dm

@@ -7,6 +7,7 @@
 	item_state = ""
 	var/translate_binary = 0
 	var/translate_hive = 0
+	var/syndie = 0
 	var/list/channels = list()
 
 
@@ -14,10 +15,11 @@
 
 /obj/item/device/encryptionkey/attackby(obj/item/weapon/W as obj, mob/user as mob)
 
-/obj/item/device/encryptionkey/traitor
+/obj/item/device/encryptionkey/syndicate
 	icon_state = "cypherkey"
 	channels = list("Syndicate" = 1)
 	origin_tech = "syndicate=3"
+	syndie = 1//Signifies that it de-crypts Syndicate transmissions
 
 /obj/item/device/encryptionkey/binary
 	icon_state = "cypherkey"

code/game/objects/radio/headset.dm

@@ -20,12 +20,13 @@
 	keyslot1 = new /obj/item/device/encryptionkey/
 	recalculateChannels()
 
-/obj/item/device/radio/headset/traitor
+/obj/item/device/radio/headset/syndicate
 	origin_tech = "syndicate=3"
-/obj/item/device/radio/headset/traitor/New()
+/obj/item/device/radio/headset/syndicate/New()
 	..()
 	del(keyslot1)
-	keyslot1 = new /obj/item/device/encryptionkey/traitor
+	keyslot1 = new /obj/item/device/encryptionkey/syndicate
+	syndie = 1
 	recalculateChannels()
 
 /obj/item/device/radio/headset/binary
@@ -177,7 +178,6 @@
 					keyslot2.loc = T
 					keyslot2 = null
 
-
 			recalculateChannels()
 			user << "You pop out the encryption keys in the headset!"
 
@@ -209,6 +209,7 @@
 	src.channels = list()
 	src.translate_binary = 0
 	src.translate_hive = 0
+	src.syndie = 0
 
 	if(keyslot1)
 		for(var/ch_name in keyslot1.channels)
@@ -223,6 +224,9 @@
 		if(keyslot1.translate_hive)
 			src.translate_hive = 1
 
+		if(keyslot1.syndie)
+			src.syndie = 1
+
 	if(keyslot2)
 		for(var/ch_name in keyslot2.channels)
 			if(ch_name in src.channels)
@@ -236,6 +240,9 @@
 		if(keyslot2.translate_hive)
 			src.translate_hive = 1
 
+		if(keyslot2.syndie)
+			src.syndie = 1
+
 
 	for (var/ch_name in channels)
 		if(!radio_controller)

code/game/objects/radio/intercom.dm

@@ -25,12 +25,14 @@
 			attack_self(user)
 
 
-	send_hear()
+	send_hear(freq)
 		if (!(src.wires & WIRE_RECEIVE))
 			return
 		if (!src.listening)
 			return
-
+		if(freq == SYND_FREQ)
+			if(!(src.syndie))
+				return//Prevents broadcast of messages over devices lacking the encryption
 		/*
 		var/turf/T = get_turf(src)
 		var/list/hear = hearers(7, T)

code/game/objects/radio/radio.dm

@@ -23,6 +23,7 @@ var/GLOBAL_RADIO_TYPE = 1 // radio type to use
 	var/freerange = 0 // 0 - Sanitize frequencies, 1 - Full range
 	var/list/channels = list() //see communications.dm for full list. First channes is a "default" for :h
 	var/subspace_transmission = 0
+	var/syndie = 0//Holder to see if it's a syndicate encrpyed radio
 //			"Example" = FREQ_LISTENING|FREQ_BROADCASTING
 	flags = FPRINT | CONDUCT | TABLEPASS
 	slot_flags = SLOT_BELT
@@ -631,6 +632,9 @@ var/GLOBAL_RADIO_TYPE = 1 // radio type to use
 	*/
 	if (!(wires & WIRE_RECEIVE))
 		return
+	if(freq == SYND_FREQ)
+		if(!(src.syndie))//Checks to see if it's allowed on that frequency, based on the encryption keys
+			return
 	if (!on)
 		return
 	if (!freq) //recieved on main frequency

code/modules/admin/verbs/striketeam_syndicate.dm

@@ -143,7 +143,7 @@ var/global/sent_syndicate_strike_team = 0
 	camera.network = "Syndicate"
 	camera.c_tag = real_name
 
-	var/obj/item/device/radio/R = new /obj/item/device/radio/headset(src)
+	var/obj/item/device/radio/R = new /obj/item/device/radio/headset/syndicate(src)
 	R.set_frequency(SYND_FREQ) //Same frequency as the syndicate team in Nuke mode.
 	equip_if_possible(R, slot_ears)
 	equip_if_possible(new /obj/item/clothing/under/syndicate(src), slot_w_uniform)

code/modules/flufftext/Hallucination.dm

@@ -338,7 +338,7 @@ var/list/non_fakeattack_weapons = list(/obj/item/weapon/gun/projectile, /obj/ite
 	/obj/item/clothing/mask/gas/voice, /obj/item/clothing/glasses/thermal,\
 	/obj/item/device/chameleon, /obj/item/weapon/card/emag,\
 	/obj/item/weapon/storage/toolbox/syndicate, /obj/item/weapon/aiModule,\
-	/obj/item/device/radio/headset/traitor,	/obj/item/weapon/plastique,\
+	/obj/item/device/radio/headset/syndicate,	/obj/item/weapon/plastique,\
 	/obj/item/device/powersink, /obj/item/weapon/storage/syndie_kit,\
 	/obj/item/toy/syndicateballoon, /obj/item/weapon/gun/energy/laser/captain,\
 	/obj/item/weapon/hand_tele, /obj/item/weapon/rcd, /obj/item/weapon/tank/jetpack,\