* qatar/master:
  FATE: add a 24-bit FLAC encoding test
  FATE: rename FLAC tests from flac-* to flac-16-*
  flacenc: use RICE2 entropy coding mode for 24-bit
  flacenc: add 24-bit encoding
  flacdsp: move lpc encoding from FLAC encoder to FLACDSPContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>