MFC r207842: Import of liblzma, xz, xzdec, lzmainfo from vendor branch Add support for xz and lzma to lesspipe.sh (xzless, lzless) MFC r207844: Add two public headers missing in r207842 Adjust CFLAGS for lzmainfo, xz, xzdec MFC r208099: Add versioned symbols to liblzma Use default SHLIB_MAJOR. Approved by: delphij (mentor)