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, 23 insertions, 0 deletions

diff --git a/contrib/xz/src/liblzma/delta/delta_encoder.h b/contrib/xz/src/liblzma/delta/delta_encoder.h
new file mode 100644
index 0000000..a447862
--- /dev/null
+++ b/contrib/xz/src/liblzma/delta/delta_encoder.h
@@ -0,0 +1,23 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       delta_encoder.h
+/// \brief      Delta filter encoder
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_DELTA_ENCODER_H
+#define LZMA_DELTA_ENCODER_H
+
+#include "delta_common.h"
+
+extern lzma_ret lzma_delta_encoder_init(lzma_next_coder *next,
+		lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_delta_props_encode(const void *options, uint8_t *out);
+
+#endif