Update license headers for cstrike modules.

dlls/cstrike/csx/WinCSX/WinCSX.cpp

@@ -1,5 +1,11 @@
-// WinCSX.cpp : Defines the entry point for the application.
+// vim: set ts=4 sw=4 tw=99 noet:
 //
+// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
+// Copyright (C) The AMX Mod X Development Team.
+//
+// This software is licensed under the GNU General Public License, version 3 or higher.
+// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
+//     https://alliedmods.net/amxmodx-license
 
 #include "stdafx.h"
 #include "WinCSX.h"