Move all code out of home.asm into home/

This results in 64 home/*.asm files, comparable to pokecrystal's 57.

home/math.asm

@@ -0,0 +1,41 @@
+; function to do multiplication
+; all values are big endian
+; INPUT
+; FF96-FF98 =  multiplicand
+; FF99 = multiplier
+; OUTPUT
+; FF95-FF98 = product
+Multiply::
+	push hl
+	push bc
+	callfar _Multiply
+	pop bc
+	pop hl
+	ret
+
+; function to do division
+; all values are big endian
+; INPUT
+; FF95-FF98 = dividend
+; FF99 = divisor
+; b = number of bytes in the dividend (starting from FF95)
+; OUTPUT
+; FF95-FF98 = quotient
+; FF99 = remainder
+Divide::
+	push hl
+	push de
+	push bc
+	ldh a, [hLoadedROMBank]
+	push af
+	ld a, BANK(_Divide)
+	ldh [hLoadedROMBank], a
+	ld [MBC1RomBank], a
+	call _Divide
+	pop af
+	ldh [hLoadedROMBank], a
+	ld [MBC1RomBank], a
+	pop bc
+	pop de
+	pop hl
+	ret