Initial CALLHLL and Math.dll implementation

HLL libraries are compiled into the executable rather than dynamically
loaded as in early versions of System 4. These days AliceSoft does the
same thing.

test/Source/System/System42/README.md

@@ -1,12 +0,0 @@
-Note
-----
-
-I am not 100% sure about the legality of distributing System40.exe and
-Sys42VM.dll here, so I've left them out. They can be found in the System 4 SDK,
-which you'll want to have anyways to compile these tests.
-
-Once you've copied the files, this directory should contain the following:
-
-    System40.exe
-    System40.ini
-    DLL\Sys42VM.dll

test/Source/System/System42/System40.ini

@@ -26,6 +26,11 @@ SaveFolder	= "SaveData"
 ; DLLフォルダ設定
 DLL		= "DLL"
 
+; DLLファイル設定
+LoadDLL = {
+	"SACT_DLL.inc",
+}
+
 ; スキップ名設定
 MsgSkipName = "既読スキップ"
 

test/Source/System/System42/System42.inc

@@ -1,7 +1,7 @@
 
 CopyToRun = {
 	"System40.exe",
-	"System40.ini"
+	"System40.ini",
 }
 
 CopyToDLL = {