Add radio_constants.asm, update "map" macro

constants/radio_constants.asm

@@ -0,0 +1,18 @@
+	const_def
+	const OAKS_POKEMON_TALK
+	const POKEDEX_SHOW
+	const POKEMON_MUSIC
+	const LUCKY_CHANNEL
+	const BUENAS_PASSWORD
+	const PLACES_AND_PEOPLE
+	const LETS_ALL_SING
+	const ROCKET_RADIO
+	const POKE_FLUTE_RADIO
+	const UNOWN_RADIO
+	const EVOLUTION_RADIO
+
+	const_def
+	const BUENA_MON
+	const BUENA_ITEM
+	const BUENA_MOVE
+	const BUENA_STRING

macros/map.asm

@@ -1,12 +1,5 @@
 map: MACRO
-; This is a silly hack to get around an rgbds bug.
-
-; Ideally:
 	db GROUP_\1, MAP_\1
-
-; \1\@  EQUS "GROUP_\1"
-; \1\@_2 EQUS "MAP_\1"
-	; db \1\@, \1\@_2
 ENDM
 
 roam_map: MACRO