Ports: Update libmodplug's patches to use git patches

Ports/libmodplug/patches/0001-Include-strings.h.patch

@@ -0,0 +1,24 @@
+From 8042f44a1358f080e28e727b3deecd43b046a8f7 Mon Sep 17 00:00:00 2001
+From: xSlendiX <gamingxslendix@gmail.com>
+Date: Sat, 18 Sep 2021 16:19:50 +0300
+Subject: [PATCH] Include strings.h
+
+---
+ src/libmodplug/stdafx.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/libmodplug/stdafx.h b/src/libmodplug/stdafx.h
+index d45d949..23c66fc 100644
+--- a/src/libmodplug/stdafx.h
++++ b/src/libmodplug/stdafx.h
+@@ -62,6 +62,7 @@ inline void ProcessPlugins(int n) {}
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <string.h>
++#include <strings.h>
+ #ifdef HAVE_MALLOC_H
+ #include <malloc.h>
+ #endif
+-- 
+2.36.1
+