Small home/ reorganization

Time to move everything out of home.asm:
- InexplicablyEmptyFunction was moved to home/map.asm
- The wDebugFlags functions and xor_a brothers were moved to
  home/flag.asm because they're all flag-related.
- ret_2f3e was moved into home/region.asm
- The register alias sisters were moved to a new file called home/call_regs.asm
- IsInArray and SkipNames were joined by AddNTimes from home/math.asm
  into home/array.asm, as they're all used to index arrays.
- CallPointerAt was moved into home/print_text.asm because given the
  contents of that file it doesn't feel very out of place (that file
  isn't very aptly named...)
- CountSetBits was moved into home/pokedex_flags.asm because it's unique
  use is counting the amount of seen/caught mon in the podedex. GetWeekday
  was pulled into this by proximity.

Other changes were also made:
- PushLYOverrides was moved from home/sprite_anims.asm to
  home/battle.asm, because it's almost exclusively used for battle
  animations, with the lone exception being the Magnet Train.
- home/copy.asm was renamed to home/gfx.asm, as it's all gfx-related
- home/copy2.asm was renamed to home/copy.asm, now it's the only file
  called copy.
- SetHPPal and GetHPPal were moved from home/hp_pals.asm to
  home/tilemap.asm, as they're attrmap related, like many functions in
  that file are.
- home/rtc.asm was renamed to home/time_palettes.asm, as it had very
  little to do with the RTC at all, all RTC functions being in home/time.asm
- home/handshake.asm was renamed to home/printer.asm.
- home/mon_data_2.asm was renamed to home/mon_party.asm.

home.asm

@@ -24,7 +24,7 @@ SECTION "Home", ROM0
 INCLUDE "home/init.asm"
 INCLUDE "home/vblank.asm"
 INCLUDE "home/delay.asm"
-INCLUDE "home/rtc.asm"
+INCLUDE "home/time_palettes.asm"
 INCLUDE "home/fade.asm"
 INCLUDE "home/lcd.asm"
 INCLUDE "home/time.asm"
@@ -32,7 +32,7 @@ INCLUDE "home/serial.asm"
 INCLUDE "home/joypad.asm"
 INCLUDE "home/decompress.asm"
 INCLUDE "home/palettes.asm"
-INCLUDE "home/copy.asm"
+INCLUDE "home/gfx.asm"
 INCLUDE "home/text.asm"
 INCLUDE "home/video.asm"
 INCLUDE "home/map_objects.asm"
@@ -41,169 +41,31 @@ INCLUDE "home/movement.asm"
 INCLUDE "home/menu.asm"
 INCLUDE "home/menu_window.asm"
 INCLUDE "home/menu2.asm"
-INCLUDE "home/handshake.asm"
+INCLUDE "home/printer.asm"
 INCLUDE "home/game_time.asm"
 INCLUDE "home/map.asm"
-
-InexplicablyEmptyFunction::
-; unused
-; Inexplicably empty.
-; Seen in PredefPointers.
-rept 16
-	nop
-endr
-	ret
-
 INCLUDE "home/farcall.asm"
 INCLUDE "home/predef.asm"
 INCLUDE "home/window.asm"
 INCLUDE "home/flag.asm"
-
-Unreferenced_CheckBPressedDebug::
-; Used in debug ROMs to walk through walls and avoid encounters.
-
-	ld a, [wDebugFlags]
-	bit DEBUG_FIELD_F, a
-	ret z
-
-	ldh a, [hJoyDown]
-	bit B_BUTTON_F, a
-	ret
-
-xor_a::
-	xor a
-	ret
-
-xor_a_dec_a::
-	xor a
-	dec a
-	ret
-
-Unreferenced_CheckFieldDebug::
-	push hl
-	ld hl, wDebugFlags
-	bit DEBUG_FIELD_F, [hl]
-	pop hl
-	ret
-
 INCLUDE "home/sprite_updates.asm"
 INCLUDE "home/string.asm"
 INCLUDE "home/region.asm"
-
-ret_2f3e::
-	ret
-
 INCLUDE "home/item.asm"
 INCLUDE "home/random.asm"
 INCLUDE "home/sram.asm"
-
-; Register aliases
-
-_hl_::
-	jp hl
-
-_de_::
-	push de
-	ret
-
+INCLUDE "home/call_regs.asm"
 INCLUDE "home/double_speed.asm"
 INCLUDE "home/clear_sprites.asm"
-INCLUDE "home/copy2.asm"
+INCLUDE "home/copy.asm"
 INCLUDE "home/copy_tilemap.asm"
 INCLUDE "home/copy_name.asm"
-
-IsInArray::
-; Find value a for every de bytes in array hl.
-; Return index in b and carry if found.
-
-	ld b, 0
-	ld c, a
-.loop
-	ld a, [hl]
-	cp -1
-	jr z, .NotInArray
-	cp c
-	jr z, .InArray
-	inc b
-	add hl, de
-	jr .loop
-
-.NotInArray:
-	and a
-	ret
-
-.InArray:
-	scf
-	ret
-
-SkipNames::
-; Skip a names.
-	ld bc, NAME_LENGTH
-	and a
-	ret z
-.loop
-	add hl, bc
-	dec a
-	jr nz, .loop
-	ret
-
+INCLUDE "home/array.asm"
 INCLUDE "home/math.asm"
 INCLUDE "home/print_text.asm"
-
-CallPointerAt::
-	ldh a, [hROMBank]
-	push af
-	ld a, [hli]
-	rst Bankswitch
-
-	ld a, [hli]
-	ld h, [hl]
-	ld l, a
-
-	call _hl_
-
-	pop hl
-	ld a, h
-	rst Bankswitch
-	ret
-
 INCLUDE "home/queue_script.asm"
 INCLUDE "home/compare.asm"
 INCLUDE "home/tilemap.asm"
-INCLUDE "home/hp_pals.asm"
-
-CountSetBits::
-; Count the number of set bits in b bytes starting from hl.
-; Return in a, c and [wNumSetBits].
-	ld c, 0
-.next
-	ld a, [hli]
-	ld e, a
-	ld d, 8
-
-.count
-	srl e
-	ld a, 0
-	adc c
-	ld c, a
-	dec d
-	jr nz, .count
-
-	dec b
-	jr nz, .next
-
-	ld a, c
-	ld [wNumSetBits], a
-	ret
-
-GetWeekday::
-	ld a, [wCurDay]
-.mod
-	sub 7
-	jr nc, .mod
-	add 7
-	ret
-
 INCLUDE "home/pokedex_flags.asm"
 INCLUDE "home/names.asm"
 INCLUDE "home/scrolling_menu.asm"
@@ -214,7 +76,7 @@ INCLUDE "home/cry.asm"
 INCLUDE "home/print_level.asm"
 INCLUDE "home/mon_data.asm"
 INCLUDE "home/print_bcd.asm"
-INCLUDE "home/mon_data_2.asm"
+INCLUDE "home/mon_party.asm"
 INCLUDE "home/battle.asm"
 INCLUDE "home/sprite_anims.asm"
 INCLUDE "home/audio.asm"