This fixes the following option set:
  --disable-encoders --disable-decoders --disable-parsers --disable-bsfs
  --disable-muxers --disable-demuxers --disable-protocols
  --enable-parser=mpegaudio


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@9641 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b