- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

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

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

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

Fix some leftover binaries and shared libraries in the system that still
have an executable stack, due to linking in hand-assembled .S or .s
files, that have no .GNU-stack sections:

RWX --- --- /lib/libcrypto.so.6
RWX --- --- /lib/libmd.so.5
RWX --- --- /lib/libz.so.6
RWX --- --- /lib/libzpool.so.2
RWX --- --- /usr/lib/liblzma.so.5

These were found using scanelf, from the sysutils/pax-utils port.

Reviewed by: kib

Reintroduce bugfix from r210103 and fix xz on strong-aligned architectures.
This fix was accidentially reverted with the 5.0.0 update in r215187.

PR: bin/154310
Submitted by: Michael Moll <kvedulv@kvedulv.de>
MFC after: 3 days

Remove obsoleted private symbol.

Approved by: delphij (mentor)
MFC after: together with 5.0.0 update

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

Unbreak xz (liblzma) on strong-aligned architectures (and without
emulation of misaligned memory accesses). We cannot map the unaligned
memory access functions to the ones used for aligned accesses, so do
not define TUKLIB_FAST_UNALIGNED_ACCESS.

Detect bit endianness through machine/endian.h. This fixes xz on big-endian
systems.

Tested on: sparc64 (kindly provided by linimon), amd64

- Add versioned symbols to liblzma
- Use default SHLIB_MAJOR.

Approved by: mm
X-MFC with: lzma library MFC

Add two public headers missing in r207842
Adjust CFLAGS for lzmainfo, xz, xzdec

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

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