Log message:
Changes 0.1.4:
- Updated upstream sources, with minor changes to the decoder API
  breaking the ABI. (Calling code using AUDIO_CHANNEL_TYPE may need to
  be updated. A new option AAC_PCM_LIMITER_ENABLE has been added, enabled
  by default, which incurs extra decoding delay.)
- PowerPC optimizations, fixes for building on AIX
- Support for reading streamed wav files in the encoder example
- Fix VBR encoding of sample rates over 64 kHz