Eliminate version.asm (resolves #464)

Makefile

@@ -52,7 +52,8 @@ tools:
 	$(MAKE) -C tools/
 
 
-$(crystal11_obj): RGBASMFLAGS = -D CRYSTAL11
+$(crystal_obj):   RGBASMFLAGS = -D _CRYSTAL
+$(crystal11_obj): RGBASMFLAGS = -D _CRYSTAL -D CRYSTAL11
 
 # The dep rules have to be explicit or else missing files won't be reported.
 # As a side effect, they're evaluated immediately instead of when the rule is invoked.

constants.asm

@@ -1,5 +1,3 @@
-INCLUDE "version.asm"
-
 INCLUDE "charmap.asm"
 
 INCLUDE "macros.asm"

constants/misc_constants.asm

@@ -16,6 +16,9 @@ HP_GREEN  EQU 0
 HP_YELLOW EQU 1
 HP_RED    EQU 2
 
+; G/S version ID: 0 = Gold, 1 = Silver (used by checkver)
+GS_VERSION EQU 0
+
 ; save file corruption check values
 SAVE_CHECK_VALUE_1 EQU 99
 SAVE_CHECK_VALUE_2 EQU 127

engine/scripting.asm

@@ -1975,12 +1975,12 @@ GetVarAction:
 Script_checkver:
 ; script command 0x18
 
-	ld a, [Version]
+	ld a, [.gs_version]
 	ld [ScriptVar], a
 	ret
 
-Version:
-	db VERSION
+.gs_version:
+	db GS_VERSION
 
 Script_pokenamemem:
 ; script command 0x40

version.asm

@@ -1,2 +0,0 @@
-_CRYSTAL EQU 1
-VERSION  EQU 0