Update XZ Utils to 5.0.3 (in deps)

src/scripts/xzgrep.in

 #!@POSIX_SHELL@
 
 # xzgrep -- a wrapper around a grep program that decompresses files as needed
 # Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
 
 # Copyright (C) 1998, 2001, 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
 # (at your option) any later version.
 
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
 #SET_PATH - This line is a placeholder to ease patching this script.
 
 # Instead of unsetting XZ_OPT, just make sure that xz will use file format
 # autodetection. This way memory usage limit and thread limit can be
 # specified via XZ_OPT. With gzip and bzip2 it's OK to just unset the
 # environment variables.
 xz='@xz@ --format=auto'
 unset GZIP BZIP BZIP2
 
-case ${0##/*} in
+case ${0##*/} in
   *egrep*) prog=xzegrep; grep=${GREP:-egrep};;
   *fgrep*) prog=xzfgrep; grep=${GREP:-fgrep};;
   *)       prog=xzgrep; grep=${GREP:-grep};;
 esac
 
 version="$prog (@PACKAGE_NAME@) @VERSION@"
 
-usage="Usage: ${0##/*} [OPTION]... [-e] PATTERN [FILE]...
+usage="Usage: ${0##*/} [OPTION]... [-e] PATTERN [FILE]...
 Look for instances of PATTERN in the input FILEs, using their
 uncompressed contents if they are compressed.
 
 OPTIONs are the same as for '$grep'.
 
 Report bugs to <@PACKAGE_BUGREPORT@>."
 
 # sed script to escape all ' for the shell, and then (to handle trailing
 # newlines correctly) turn trailing X on last line into '.
 escape='
@@ skipping 70 matching lines @@
   case $option in
   (*\'?*)
     option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");;
   (*)
     option="'$option'";;
   esac
 
   grep="$grep $option$optarg"
 done
 
+if test $files_with_matches -eq 1 || test $files_without_matches -eq 1; then
+  grep="$grep -q"
+fi
+
 eval "set -- $operands "'${1+"$@"}'
 
 if test $have_pat -eq 0; then
   case ${1?"Missing pattern; try \`${0##*/} --help' for help"} in
   (*\'*)
     grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");;
   (*)
     grep="$grep -- '$1'";;
   esac
   shift
@@ skipping 10 matching lines @@
   case $i in
     *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdfq";;
     *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdfq";;
     *) uncompress="$xz -cdfq";;
   esac
   # Fail if xz or grep (or sed) fails.
   xz_status=$(
     exec 5>&1
     ($uncompress -- "$i" 5>&-; echo $? >&5) 3>&- |
     if test $files_with_matches -eq 1; then
-      eval "$grep" -q && { printf '%s\n' "$i" || exit 2; }
+      eval "$grep" && { printf '%s\n' "$i" || exit 2; }
     elif test $files_without_matches -eq 1; then
-      eval "$grep" -q || {
+      eval "$grep" || {
         r=$?
         if test $r -eq 1; then
           printf '%s\n' "$i" || r=2
         fi
         exit $r
       }
     elif test $with_filename -eq 0 &&
          { test $# -eq 1 || test $no_filename -eq 1; }; then
       eval "$grep"
     else
@@ skipping 15 matching lines @@
         (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
       ) || r=2
       exit $r
     fi >&3 5>&-
   )
   r=$?
   test "$xz_status" -eq 0 || test "$xz_status" -eq 2 || r=2
   test $res -lt $r && res=$r
 done
 exit $res