Replace assembly implementation with C implementation

src/setup/setupmp18.c

@@ -0,0 +1,39 @@
+//
+// Stage ID 0x4a
+//
+
+#include "../include/setup.h"
+
+u8 intro[];
+u8 props[];
+struct aipaths paths[];
+struct ailists functions[];
+
+void *setup[] = {
+	NULL,
+	NULL,
+	NULL,
+	intro,
+	props,
+	paths,
+	functions,
+	NULL,
+};
+
+u8 props[] = {
+	endprops
+};
+
+u8 intro[] = {
+	outfit(OUTFIT_DEFAULT)
+	endintro
+};
+
+struct aipaths paths[] = {
+	{ NULL, 0, 0 },
+};
+
+struct ailists functions[] = {
+	{ NULL, 0 },
+};
+