Update XZ Utils to 5.0.3 (in deps)

src/scripts/xzdiff.in

 #!@POSIX_SHELL@
 
 # Copyright (C) 1998, 2002, 2006, 2007 Free Software Foundation
 # Copyright (C) 1993 Jean-loup Gailly
 
 # Modified for XZ Utils by Andrew Dudman and Lasse Collin.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
@@ skipping 56 matching lines @@
 xz1=$xz
 xz2=$xz
 xz_status=0
 exec 3>&1
 
 if test $# -eq 1; then
   case $1 in
     *[-.]xz | *[-.]lzma | *.t[lx]z)
       ;;
     *[-.]bz2 | *.tbz | *.tbz2)
-      xz1=$bzip2;;
+      xz1=bzip2;;
     *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z)
-      xz1=$gzip;;
+      xz1=gzip;;
     *)
       echo >&2 "$0: $1: Unknown compressed file name suffix"
       exit 2;;
   esac
   case $1 in
     *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma)
       FILE=`expr "X$1" : 'X\(.*\)[-.][abglmxzZ2]*$'`;;
     *.t[abglx]z)
       FILE=`expr "X$1" : 'X\(.*[-.]t\)[abglx]z$'`ar;;
     *.tbz2)
       FILE=`expr "X$1" : 'X\(.*[-.]t\)bz2$'`ar;;
   esac
   xz_status=$(
     exec 4>&1
     ($xz1 -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3
   )
 elif test $# -eq 2; then
   case $1 in
-    *[-.]bz2 | *.tbz | *.tbz2) xz1=$bzip2;;
-    *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=$gzip;;
+    *[-.]bz2 | *.tbz | *.tbz2) xz1=bzip2;;
+    *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=gzip;;
   esac
   case $2 in
-    *[-.]bz2 | *.tbz | *.tbz2) xz2=$bzip2;;
-    *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=$gzip;;
+    *[-.]bz2 | *.tbz | *.tbz2) xz2=bzip2;;
+    *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=gzip;;
   esac
   case $1 in
     *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -)
       case "$2" in
         *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -)
           if test "$1$2" = --; then
             xz_status=$(
               exec 4>&1
               ($xz1 -cdfq - 4>&-; echo $? >&4) 3>&- |
                 eval "$cmp" - - >&3
@@ skipping 49 matching lines @@
     esac;;
   esac
 else
   echo >&2 "$0: Invalid number of operands; try \`${0##*/} --help' for help"
   exit 2
 fi
 
 cmp_status=$?
 test "$xz_status" -eq 0 || exit 2
 exit $cmp_status