Nihon Route 49, Folage, and Barreau

This commit adds Nihon Route 49. It has everything necessary to work, but the wild Pokemon don't seem to spawn. I've added infrastructure that should allow this to happen, and it works for Kanto, so I am presuming that some other tomfoolery is at work.

I've also added Folage and Barreau, and implemented Folage into the Headbutt Tree table. This was to give them to the Bug Catcher on the route.

constants/event_flags.asm

@@ -915,6 +915,7 @@
 	const EVENT_BEAT_BUG_CATCHER_STACEY
 	const EVENT_BEAT_BUG_CATCHER_ELLIS
 	const EVENT_BEAT_BUG_CATCHER_ABNER
+	const EVENT_BEAT_BUG_CATCHER_SIONED
 ; Officer
 	const EVENT_BEAT_OFFICER_KEITH
 	const EVENT_BEAT_OFFICER_DIRK

constants/landmark_constants.asm

@@ -121,6 +121,7 @@ DEF KANTO_LANDMARK EQU const_value
     ;const LANDMARK_ONE_ISLAND
 DEF NIHON_LANDMARK EQU const_value
 	const LANDMARK_SILENT_HILLS
+	const LANDMARK_ROUTE_49
 	const LANDMARK_BLUE_FOREST
 DEF NUM_LANDMARKS EQU const_value
 

constants/map_constants.asm

@@ -518,6 +518,7 @@ ENDM
 	newgroup SILENT_HILLS ; 27
 	map_const SILENT_HILLS,								   10, 10 ; 1
 	map_const DEBUG_ROOM,								   20, 20 ; 2
+	map_const ROUTE_49,									15,  9 ; 3
 	endgroup
 	
 	newgroup BLUE_FOREST                                          ; 27

constants/pokemon_constants.asm

@@ -221,6 +221,8 @@ DEF JOHTO_POKEMON EQU const_value
 	const LEDIAN     ; a6
 	const SPINARAK   ; a7
 	const ARIADOS    ; a8
+	const FOLAGE
+	const BARREAU
 	const CROBAT     ; a9
 	const CHINCHOU   ; aa
 	const LANTURN    ; ab

constants/trainer_constants.asm

@@ -348,6 +348,7 @@ DEF KRIS EQU __trainer_class__
 	const ARNIE4
 	const ARNIE5
 	const WAYNE
+	const SIONED
 	const BUG_CATCHER_DANE
 	const BUG_CATCHER_DION
 	const BUG_CATCHER_STACEY