Fix: [MinGW] Set minimum OS version to Windows XP (#9135)

(cherry picked from commit 356bbbb90a)

src/script/api/script_date.cpp

@@ -7,12 +7,13 @@
 
 /** @file script_date.cpp Implementation of ScriptDate. */
 
-#include <time.h>
 #include "../../stdafx.h"
 #include "script_date.hpp"
 #include "../../date_func.h"
 #include "../../settings_type.h"
 
+#include <time.h>
+
 #include "../../safeguards.h"
 
 /* static */ bool ScriptDate::IsValidDate(Date date)

src/script/squirrel.cpp

@@ -7,8 +7,6 @@
 
 /** @file squirrel.cpp the implementation of the Squirrel class. It handles all Squirrel-stuff and gives a nice API back to work with. */
 
-#include <stdarg.h>
-#include <map>
 #include "../stdafx.h"
 #include "../debug.h"
 #include "squirrel_std.hpp"
@@ -21,6 +19,9 @@
 #include <../squirrel/sqvm.h>
 #include "../core/alloc_func.hpp"
 
+#include <stdarg.h>
+#include <map>
+
 /**
  * In the memory allocator for Squirrel we want to directly use malloc/realloc, so when the OS
  * does not have enough memory the game does not go into unrecoverable error mode and kill the