find all codecs, even the ones with numbers

Originally committed as revision 5713 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -662,8 +662,8 @@ for opt do
   FFMPEG_CONFIGURATION="$FFMPEG_CONFIGURATION""$opt "
 done
 
-ENCODER_LIST=`grep 'register_avcodec(&[a-z]*_encoder)' $source_path/libavcodec/allcodecs.c  | sed 's/.*&\(.*\)).*/\1/'`
-DECODER_LIST=`grep 'register_avcodec(&[a-z]*_decoder)' $source_path/libavcodec/allcodecs.c  | sed 's/.*&\(.*\)).*/\1/'`
+ENCODER_LIST=`grep 'register_avcodec(&[a-z0-9]*_encoder)' $source_path/libavcodec/allcodecs.c  | sed 's/.*&\(.*\)).*/\1/'`
+DECODER_LIST=`grep 'register_avcodec(&[a-z0-9]*_decoder)' $source_path/libavcodec/allcodecs.c  | sed 's/.*&\(.*\)).*/\1/'`
 PARSER_LIST=`grep 'av_register_codec_parser(&[a-z]' $source_path/libavcodec/allcodecs.c  | sed 's/.*&\(.*\)).*/\1/'`
 MUXER_LIST=`grep 'av_register_output_format(&[a-z]' $source_path/libavformat/allformats.c  | sed 's/.*&\(.*\)).*/\1/'`
 DEMUXER_LIST=`grep 'av_register_input_format(&[a-z]' $source_path/libavformat/allformats.c  | sed 's/.*&\(.*\)).*/\1/'`