Rename some labels

- Remove "Buffer" suffix from some byte and word quantities
- Change "Ptr" to "Pointer"

Fixes #789

engine/events/battle_tower/battle_tower.asm

@@ -269,7 +269,7 @@ ReadBTTrainerParty:
 	jr nc, .skip_mon_1
 
 	ld a, [wBT_OTTempMon1]
-	ld [wNamedObjectIndexBuffer], a
+	ld [wNamedObjectIndex], a
 	call GetPokemonName
 	ld l, e
 	ld h, d
@@ -283,7 +283,7 @@ ReadBTTrainerParty:
 	farcall CheckStringForErrors
 	jr nc, .skip_mon_2
 	ld a, [wBT_OTTempMon2]
-	ld [wNamedObjectIndexBuffer], a
+	ld [wNamedObjectIndex], a
 	call GetPokemonName
 	ld l, e
 	ld h, d
@@ -297,7 +297,7 @@ ReadBTTrainerParty:
 	farcall CheckStringForErrors
 	jr nc, .skip_mon_3
 	ld a, [wBT_OTTempMon3]
-	ld [wNamedObjectIndexBuffer], a
+	ld [wNamedObjectIndex], a
 	call GetPokemonName
 	ld l, e
 	ld h, d
@@ -1289,7 +1289,7 @@ endr
 	ld a, EGG_TICKET
 	ld [wCurItem], a
 	ld a, 1
-	ld [wItemQuantityChangeBuffer], a
+	ld [wItemQuantityChange], a
 	ld a, -1
 	ld [wCurItemQuantity], a
 	ld hl, wNumItems

engine/events/battle_tower/load_trainer.asm

@@ -168,13 +168,13 @@ LoadRandomBattleTowerMon:
 	ld bc, NICKNAMED_MON_STRUCT_LENGTH
 	call CopyBytes
 
-	ld a, [wNamedObjectIndexBuffer]
+	ld a, [wNamedObjectIndex]
 	push af
 	push de
 	ld hl, -NICKNAMED_MON_STRUCT_LENGTH
 	add hl, de
 	ld a, [hl]
-	ld [wNamedObjectIndexBuffer], a
+	ld [wNamedObjectIndex], a
 	ld bc, PARTYMON_STRUCT_LENGTH
 	add hl, bc
 	push hl
@@ -187,7 +187,7 @@ LoadRandomBattleTowerMon:
 
 	pop de
 	pop af
-	ld [wNamedObjectIndexBuffer], a
+	ld [wNamedObjectIndex], a
 	pop bc
 	dec c
 	jp nz, .loop