Update copyright year and mention other copyright holders.

Originally committed as revision 6408 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -3846,7 +3846,7 @@ const OptionDef options[] = {
 
 static void show_banner(void)
 {
-    fprintf(stderr, "FFmpeg version " FFMPEG_VERSION ", Copyright (c) 2000-2004 Fabrice Bellard\n");
+    fprintf(stderr, "FFmpeg version " FFMPEG_VERSION ", Copyright (c) 2000-2006 Fabrice Bellard, et al.\n");
     fprintf(stderr, "  configuration: " FFMPEG_CONFIGURATION "\n");
     fprintf(stderr, "  libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
     fprintf(stderr, "  libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");

ffplay.c

@@ -2385,7 +2385,7 @@ const OptionDef options[] = {
 
 void show_help(void)
 {
-    printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
+    printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003-2006 Fabrice Bellard, et al.\n"
            "usage: ffplay [options] input_file\n"
            "Simple media player\n");
     printf("\n");

ffserver.c

@@ -4417,7 +4417,7 @@ static void write_packet(FFCodec *ffenc,
 
 static void show_banner(void)
 {
-    printf("ffserver version " FFMPEG_VERSION ", Copyright (c) 2000-2003 Fabrice Bellard\n");
+    printf("ffserver version " FFMPEG_VERSION ", Copyright (c) 2000-2006 Fabrice Bellard, et al.\n");
 }
 
 static void show_help(void)