Log Message:
1.29.4:
- new option(--tag) to add named tags (iTunes '----')
- faster and better short/long window type switch
- Don't build DRM(Digital Radio Mondiale) by default.
  Use ./configure --enable-drm to build DRM version.
- fixed bugs
  * rounding in QuantizeReflectionCoeffs (tns.c)
  * use +60 value for scalefactor.
  * use clipped diff instead of original value (huffman.c)