move licence header fixes

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@6800 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/rtp_internal.h

@@ -2,7 +2,9 @@
  * RTP definitions
  * Copyright (c) 2006 Ryan Martell <rdm4@martellventures.com>
  *
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.