[Cin] flac 1.4.0

https://www.phoronix.com/news/FLAC-1.4-Released there ARE breaking changes in API so it may not work with our code yet ... One thing NOT mentioned in Phoronix article but spelled out on github is removal of some assembly optimizations, because they "provide only small benefits" and make fuzzing harder... so speed might be slower, not sure how much