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

xz/src/common/tuklib_progname.h

+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       tuklib_progname.h
+/// \brief      Program name to be displayed in messages
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef TUKLIB_PROGNAME_H
+#define TUKLIB_PROGNAME_H
+
+#include "tuklib_common.h"
+#include <errno.h>
+
+TUKLIB_DECLS_BEGIN
+
+#if HAVE_DECL_PROGRAM_INVOCATION_NAME
+#       define progname program_invocation_name
+#else
+#       define progname TUKLIB_SYMBOL(tuklib_progname)
+        extern char *progname;
+#endif
+
+#define tuklib_progname_init TUKLIB_SYMBOL(tuklib_progname_init)
+extern void tuklib_progname_init(char **argv);
+
+TUKLIB_DECLS_END
+#endif