Merge branch 'dev' into http-to-https

diff --cc lib/legacy/zstd_v01.c
Simple merge

diff --cc lib/legacy/zstd_v02.c
Simple merge

diff --cc lib/legacy/zstd_v03.c
Simple merge

diff --cc lib/legacy/zstd_v04.c
Simple merge

diff --cc lib/legacy/zstd_v05.c
Simple merge

diff --cc lib/legacy/zstd_v06.c
Simple merge

diff --cc lib/legacy/zstd_v07.c
Simple merge

diff --cc programs/fileio.c
Simple merge

diff --cc programs/platform.h
Simple merge