Rename some labels

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

Fixes #789

home/farcall.asm

@@ -28,9 +28,9 @@ ReturnFarCall::
 ; We want to retain the contents of f.
 ; To do this, we can pop to bc instead of af.
 	ld a, b
-	ld [wFarCallBCBuffer], a
+	ld [wFarCallBC], a
 	ld a, c
-	ld [wFarCallBCBuffer + 1], a
+	ld [wFarCallBC + 1], a
 
 ; Restore the working bank.
 	pop bc
@@ -38,9 +38,9 @@ ReturnFarCall::
 	rst Bankswitch
 
 ; Restore the contents of bc.
-	ld a, [wFarCallBCBuffer]
+	ld a, [wFarCallBC]
 	ld b, a
-	ld a, [wFarCallBCBuffer + 1]
+	ld a, [wFarCallBC + 1]
 	ld c, a
 	ret