MFC r311504: MFV r311477: xz 5.2.3.

MFC: xz 5.2.2.

Relnotes: yes

MFC r273498: MFV r273494: xz 5.0.7.

MFC r262754: MFV r253848 (mm):

Update vendor/xz from v5.0 branch to post-5.0.5

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFV r244559:
Update contrib/xz to version 5.0.4

MFC after: 2 weeks

Update xz to git snapshot of v5.0 branch as of 20110711 (post-5.0.3)

For architectures with __NO_STRICT_ALIGNMENT
define TUKLIB_FAST_UNALIGNED_ACCESS

MFC after: 2 weeks

Update xz to release 5.0.1

MFC after: 1 week

Update xz to release 5.0.0

Approved by: delphij (mentor)
MFC after: 1 week

Upgrade xz to git snapshot as of 20101010

Approved by: delphij (mentor)
MFC after: 1 month

Import of liblzma, xz, xzdec, lzmainfo from vendor branch
Add support for xz and lzma to lesspipe.sh (xzless, lzless)
Bump __FreeBSD_version

Approved by: delphij (mentor)
MFC after: 2 weeks

Vendor import of xz (stripped)
Git revision: a290cfee3e23f046889c022aa96b4eca2016fdda

Approved by: delphij (mentor)