Update XZ Utils to 5.0.4 (third_party)

tests/test_scripts.sh

+#!/bin/sh
+
+###############################################################################
+#
+# Author: Jonathan Nieder
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
+###############################################################################
+
+# If scripts weren't built, this test is skipped.
+XZ=../src/xz/xz
+XZDIFF=../src/scripts/xzdiff
+test -x "$XZ" || XZ=
+test -x "$XZDIFF" || XZDIFF=
+if test -z "$XZ" || test -z "$XZDIFF"; then
+        (exit 77)
+        exit 77
+fi
+
+PATH=`pwd`/../src/xz:$PATH
+export PATH
+
+preimage=$srcdir/files/good-1-check-crc32.xz
+samepostimage=$srcdir/files/good-1-check-crc64.xz
+otherpostimage=$srcdir/files/good-1-lzma2-1.xz
+
+"$XZDIFF" "$preimage" "$samepostimage" >/dev/null
+status=$?
+if test "$status" != 0 ; then
+        echo "xzdiff with no changes exited with status $status != 0"
+        (exit 1)
+        exit 1
+fi
+
+"$XZDIFF" "$preimage" "$otherpostimage" >/dev/null
+status=$?
+if test "$status" != 1 ; then
+        echo "xzdiff with changes exited with status $status != 1"
+        (exit 1)
+        exit 1
+fi
+
+"$XZDIFF" "$preimage" "$srcdir/files/missing.xz" >/dev/null 2>&1
+status=$?
+if test "$status" != 2 ; then
+        echo "xzdiff with missing operand exited with status $status != 2"
+        (exit 1)
+        exit 1
+fi
+
+(exit 0)
+exit 0