Add an unpatched version of xz, XZ Utils, to /trunk/deps/third_party

xz/src/liblzma/check/crc_macros.h

+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       crc_macros.h
+/// \brief      Some endian-dependent macros for CRC32 and CRC64
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef WORDS_BIGENDIAN
+#       define A(x) ((x) >> 24)
+#       define B(x) (((x) >> 16) & 0xFF)
+#       define C(x) (((x) >> 8) & 0xFF)
+#       define D(x) ((x) & 0xFF)
+
+#       define S8(x) ((x) << 8)
+#       define S32(x) ((x) << 32)
+
+#else
+#       define A(x) ((x) & 0xFF)
+#       define B(x) (((x) >> 8) & 0xFF)
+#       define C(x) (((x) >> 16) & 0xFF)
+#       define D(x) ((x) >> 24)
+
+#       define S8(x) ((x) >> 8)
+#       define S32(x) ((x) >> 32)
+#endif