new copyrights

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@3404 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/mjpeg.c

 /*
  * MJPEG encoder and decoder
  * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2003 Alex Beregszaszi
+ * Copyright (c) 2003-2004 Michael Niedermayer
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public