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

1 files changed, 67 insertions, 0 deletions

diff --git a/contrib/xz/THANKS b/contrib/xz/THANKS
new file mode 100644
index 0000000..2ffbb1e
--- /dev/null
+++ b/contrib/xz/THANKS
@@ -0,0 +1,67 @@
+
+Thanks
+======
+
+Some people have helped more, some less, but nevertheless everyone's help
+has been important. :-) In alphabetical order:
+  - Mark Adler
+  - H. Peter Anvin
+  - Nelson H. F. Beebe
+  - Karl Berry
+  - Anders F. Björklund
+  - Emmanuel Blot
+  - Trent W. Buck
+  - David Burklund
+  - Marek Černocký
+  - Andrew Dudman
+  - Markus Duft
+  - İsmail Dönmez
+  - Robert Elz
+  - Gilles Espinasse
+  - Mike Frysinger
+  - Joachim Henke
+  - Peter Ivanov
+  - Jouk Jansen
+  - Per Øyvind Karlsen
+  - Thomas Klausner
+  - Richard Koch
+  - Ville Koskinen
+  - Stephan Kulow
+  - Peter Lawler
+  - Hin-Tak Leung
+  - Andraž 'ruskie' Levstik
+  - Jim Meyering
+  - Rafał Mużyło
+  - Adrien Nader
+  - Hongbo Ni
+  - Jonathan Nieder
+  - Igor Pavlov
+  - Elbert Pol
+  - Mikko Pouru
+  - Robert Readman
+  - Bernhard Reutner-Fischer
+  - Christian von Roques
+  - Jukka Salmi
+  - Alexandre Sauvé
+  - Andreas Schwab
+  - Dan Shechter
+  - Stuart Shelton
+  - Jonathan Stott
+  - Paul Townsend
+  - Mohammed Adnène Trojette
+  - Alexey Tourbin
+  - Patrick J. Volkerding
+  - Christian Weisgerber
+  - Bert Wesarg
+  - Ralf Wildenhues
+  - Charles Wilson
+  - Lars Wirzenius
+  - Pilorz Wojciech
+  - Ryan Young
+  - Andreas Zieringer
+
+Also thanks to all the people who have participated in the Tukaani project.
+
+I have probably forgot to add some names to the above list. Sorry about
+that and thanks for your help.
+