Add suffixes to some constants to avoid ambiguity

- `PSYCHIC` → `PSYCHIC_TYPE` (not the trainer `PSYCHIC_T` or the move `PSYCHIC_M`)
- `BLACKBELT` → `BLACKBELT_I` (not the trainer `BLACKBELT_T`)
- `CURSE_T` → `CURSE_TYPE` (not the move `CURSE`)
- `TOWN_MAP_D` → `TOWN_MAP_POSTER` (not the item `TOWN_MAP`)

This also uncovered a misidentified event: `EVENT_DECO_PLANT_4` → `EVENT_DECO_POSTER_1`. (There are three plants and four posters.)

constants/deco_constants.asm

@@ -13,7 +13,7 @@ const_value = 1
 	const MAGNAPLANT
 	const TROPICPLANT
 	const JUMBOPLANT
-	const TOWN_MAP_D
+	const TOWN_MAP_POSTER
 	const FAMICOM
 	const SUPER_NES
 	const NINTENDO_64

constants/event_flags.asm

@@ -701,10 +701,10 @@
 	const EVENT_DECO_PLANT_1
 	const EVENT_DECO_PLANT_2
 	const EVENT_DECO_PLANT_3
-	const EVENT_DECO_PLANT_4
-	const EVENT_DECO_POSTER_1 ; 2b0
-	const EVENT_DECO_POSTER_2
+	const EVENT_DECO_POSTER_1
+	const EVENT_DECO_POSTER_2 ; 2b0
 	const EVENT_DECO_POSTER_3
+	const EVENT_DECO_POSTER_4
 	const EVENT_DECO_FAMICOM
 	const EVENT_DECO_SNES
 	const EVENT_DECO_N64

constants/item_constants.asm

@@ -103,7 +103,7 @@
 	const MYSTIC_WATER ; 5f
 	const TWISTEDSPOON ; 60
 	const WHT_APRICORN ; 61
-	const BLACKBELT    ; 62
+	const BLACKBELT_I  ; 62
 	const BLK_APRICORN ; 63
 	const ITEM_64      ; 64
 	const PNK_APRICORN ; 65

constants/type_constants.asm

@@ -28,7 +28,7 @@ UNUSED_TYPES EQU const_value
 	const TYPE_16
 	const TYPE_17
 	const TYPE_18
-	const CURSE_T
+	const CURSE_TYPE
 UNUSED_TYPES_END EQU const_value
 
 SPECIAL EQU const_value
@@ -36,7 +36,7 @@ SPECIAL EQU const_value
 	const WATER
 	const GRASS
 	const ELECTRIC
-	const PSYCHIC
+	const PSYCHIC_TYPE
 	const ICE
 	const DRAGON
 	const DARK