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, 29 insertions, 0 deletions

diff --git a/contrib/xz/src/liblzma/subblock/subblock_decoder_helper.h b/contrib/xz/src/liblzma/subblock/subblock_decoder_helper.h
new file mode 100644
index 0000000..18dcbb3
--- /dev/null
+++ b/contrib/xz/src/liblzma/subblock/subblock_decoder_helper.h
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       subblock_decoder_helper.h
+/// \brief      Helper filter for the Subblock decoder
+///
+/// This filter is used to indicate End of Input for subfilters needing it.
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SUBBLOCK_DECODER_HELPER_H
+#define LZMA_SUBBLOCK_DECODER_HELPER_H
+
+#include "common.h"
+
+
+typedef struct {
+	bool end_was_reached;
+} lzma_options_subblock_helper;
+
+
+extern lzma_ret lzma_subblock_decoder_helper_init(lzma_next_coder *next,
+		lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif