GLUT: Relicense Mark Kilgard's GLUT components

* A copy of the email approving this change is
  in the LICENSE.txt file
* This clears up several concerns
* We now have permission to clean / update GLUT
  code and redistrubute its binaries.
* We have to ensure all of Mark's work is *not*
  GPL licensed as per his wishes.

headers/os/opengl/GL/glut.h

@@ -1,15 +1,20 @@
+/*
+ * Copyright 1994-1997 Mark Kilgard, All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * GPL licensing not permitted.
+ *
+ * Authors:
+ *      Mark Kilgard
+ */
 #ifndef __glut_h__
 #define __glut_h__
 
-/* Copyright (c) Mark J. Kilgard, 1994, 1995, 1996, 1998. */
-
-/* This program is freely distributable without licensing fees  and is
-   provided without guarantee or warrantee expressed or  implied. This
-   program is -not- in the public domain. */
 
 #include <GL/gl.h>
 #include <GL/glu.h>
 
+
 #if defined(__MINGW32__)
 #include <GL/mesa_wgl.h>
 #endif
@@ -752,4 +757,5 @@ GLUTAPI int GLUTAPIENTRY glutGameModeGet(GLenum mode);
 }
 #endif
 
+
 #endif                  /* __glut_h__ */