Log Message:
update to 0.2.7
changes:
-Fix decoding of multi-channel ADPCM WAVE files (was patched in pkgsrc)
-Reduce unshared data in library
-Fix handling of audio files with more than 2^24 frames
-Add support for writing double-precision floating-point WAVE files
-Add support for reading certain uncompressed AIFF-C files created
 by Mac OS X
-Write fact chunk in floating-point WAVE files