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, 27 insertions, 0 deletions

diff --git a/contrib/xz/src/liblzma/common/easy_preset.c b/contrib/xz/src/liblzma/common/easy_preset.c
new file mode 100644
index 0000000..2f98598
--- /dev/null
+++ b/contrib/xz/src/liblzma/common/easy_preset.c
@@ -0,0 +1,27 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       easy_preset.c
+/// \brief      Preset handling for easy encoder and decoder
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "easy_preset.h"
+
+
+extern bool
+lzma_easy_preset(lzma_options_easy *opt_easy, uint32_t preset)
+{
+	if (lzma_lzma_preset(&opt_easy->opt_lzma, preset))
+		return true;
+
+	opt_easy->filters[0].id = LZMA_FILTER_LZMA2;
+	opt_easy->filters[0].options = &opt_easy->opt_lzma;
+	opt_easy->filters[1].id = LZMA_VLI_UNKNOWN;
+
+	return false;
+}