Change the condition for applying Rance4v2 hack

Now it's determined by the MT command argument.

src/cmdm.c

@@ -165,15 +165,12 @@ void commandMT() {
 	nact->game_title_utf8 = toUTF8(str);
 	ags_setWindowTitle(str);
 	
-	/* 闘神都市II 対策 */
-	if (0 == strcmp(nact->game_title_utf8, GT_TOSHIN2)) {
+	if (!strcmp(nact->game_title_utf8, GT_TOSHIN2))
 		dummy_pcm_su_flag = TRUE;
-	}
-	
-	/* Rance4 対策？ */
-	if (0 == strcmp(nact->game_title_utf8, GT_RANCE4)) {
+	if (!strcmp(nact->game_title_utf8, GT_RANCE4))
 		Y3waitFlags = KEYWAIT_NONCANCELABLE;
-	}
+	if (!strcmp(nact->game_title_utf8, GT_RANCE4V2))
+		nact->game_rance4v2 = true;
 
 	DEBUG_COMMAND("MT %s:",str);
 }

src/cmdy.c

@@ -147,7 +147,6 @@ void commandY() {
 	case 1900:
 		// The effect of Y1900 is unknown, but since it is only used by Rance4
 		// ver2 as the very first command, do some initialization here.
-		nact->game_rance4v2 = true;
 		muscd_init_bgm(DRIFILE_WAVE, 999);
 		break;
 	default:

src/gametitle.h

@@ -1,4 +1,5 @@
 #define GT_TOSHIN2 "闘神都市Ⅱ　ｆｏｒ　Ｗｉｎ９５　"
 #define GT_RANCE4 "Ｒａｎｃｅ４　－教団の遺産－　Ｆｏｒ　Ｗｉｎ９５　"
+#define GT_RANCE4V2 "RanceⅣ　－教団の遺産－　for Windows　"
 #define GT_RANCE3_ENG "Rance3"
 #define GT_RANCE4_ENG "Rance4 -Legacy of the Sect- For Win95 "