K 10
svn:author
V 6
tsoome
K 8
svn:date
V 27
2019-12-02T11:44:39.749431Z
K 7
svn:log
V 403
MFC r354253, r354254, r354264, r354265
Remove duplicate lz4 implementations

Port illumos change: https://www.illumos.org/issues/11667

Move lz4.c out of zfs tree to opensolaris/common/lz4, adjust it to be
usable from kernel/stand/userland builds, so we can use just one single
source. Add lz4.h to declare lz4_compress() and lz4_decompress().

Differential Revision:	https://reviews.freebsd.org/D22037

END