Update XZ Utils to 5.0.4 (third_party)

configure.ac

 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
 ###############################################################################
 #
 # Author: Lasse Collin
 #
 # This file has been put into the public domain.
 # You can do whatever you want with this file.
 #
@@ skipping 413 matching lines @@
         AC_MSG_ERROR([No C99 compiler was found.])
 fi
 
 AM_PROG_CC_C_O
 AM_PROG_AS
 AC_USE_SYSTEM_EXTENSIONS
 
 if test "x$enable_threads" = xyes; then
         echo
         echo "Threading support:"
-        ACX_PTHREAD
+        AX_PTHREAD
         LIBS="$LIBS $PTHREAD_LIBS"
         AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
-        CC="$PTHREAD_CC"
+
+        dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX, but
+        dnl it's tricky to get it right together with AC_PROG_CC_C99.
+        dnl Thus, this is handled by telling the user in INSTALL to set
+        dnl the correct CC manually.
 fi
 
 echo
 echo "Initializing Libtool:"
 LT_PREREQ([2.2])
 LT_INIT([win32-dll])
 LT_LANG([Windows Resource])
 
 # This is a bit wrong since it is possible to request that only some libs
 # are built as shared. Using that feature isn't so common though, and this
@@ skipping 172 matching lines @@
         po/Makefile.in
         lib/Makefile
         src/Makefile
         src/liblzma/liblzma.pc
         src/liblzma/Makefile
         src/liblzma/api/Makefile
         src/xz/Makefile
         src/xzdec/Makefile
         src/lzmainfo/Makefile
         src/scripts/Makefile
-        src/scripts/xzdiff
-        src/scripts/xzgrep
-        src/scripts/xzmore
-        src/scripts/xzless
         tests/Makefile
         debug/Makefile
 ])
+AC_CONFIG_FILES([src/scripts/xzdiff], [chmod +x src/scripts/xzdiff])
+AC_CONFIG_FILES([src/scripts/xzgrep], [chmod +x src/scripts/xzgrep])
+AC_CONFIG_FILES([src/scripts/xzmore], [chmod +x src/scripts/xzmore])
+AC_CONFIG_FILES([src/scripts/xzless], [chmod +x src/scripts/xzless])
 
 AC_OUTPUT
 
 # Some warnings
 if test x$tuklib_cv_physmem_method = xunknown; then
         echo
         echo "WARNING:"
         echo "No supported method to detect the amount of RAM."
         echo "Consider using --enable-assume-ram (if you didn't already)"
         echo "or make a patch to add support for this operating system."
 fi
 
 # Not threading yet so don't warn.
 #if test x$tuklib_cv_cpucores_method = xunknown; then
 #       echo
 #       echo "WARNING:"
 #       echo "No supported method to detect the number of CPU cores."
 #fi