wavpack 5.7.0-1

[Takashi Yano]

The following packages have been uploaded to the Cygwin distribution:

* wavpack-5.7.0-1
* libwavpack1-5.7.0-1
* libwavpack-devel-5.7.0-1

WavPack is a completely open audio compression format providing
lossless, high-quality lossy, and a unique hybrid compression mode.
Although the technology is loosely based on previous versions of
WavPack, the new version 4 format has been designed from the ground up
to offer unparalleled performance and functionality.