add a WavpackSeekSample() API test to the "wvtest" test suite program - unlike existing tests, this requires existing WavPack target files to seek around in
add a WavpackSeekSample() API test to the "wvtest" test suite program
- unlike existing tests, this requires existing WavPack target files to seek around in

dbry/WavPack,dbry/WavPack,dbry/WavPack