Fix licence header (aka <pedantic mode='on' /> )

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@6799 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/rtp_internal.h

@@ -5,9 +5,9 @@
  * This library 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.