* perf: improved zstd_opt strategy (levels 16-19)
* fix : bug #944 : multithreading with shared ditionary and
large data, reported by @gsliepen
* cli : fix : content size written in header by default
* cli : fix : improved LZ4 format support, by @felixhandte
* cli : new : hidden command -b -S, to benchmark multiple files
and generate one result per file
* api : change : when setting pledgedSrcSize, use
ZSTD_CONTENTSIZE_UNKNOWN macro value to mean "unknown"
* api : fix : support large skippable frames, by @terrelln
* api : fix : re-using context could result in suboptimal
block size in some corner case scenarios
* api : fix : streaming interface was adding a useless
3-bytes null block to small frames
OBS-URL: https://build.opensuse.org/package/show/Archiving/zstd?expand=0&rev=11