Update xdg-utils to the latest version available in git.

third_party/xdg-utils/scripts/xdg-terminal.in

 #!/bin/sh
 #---------------------------------------------
 #   xdg-terminal
 #
 #   Utility script to open the registered terminal emulator
 #
 #   Refer to the usage() function below for usage.
 #
 #   Copyright 2009-2010, Fathi Boudra <fabo@freedesktop.org>
 #   Copyright 2009-2010, Rex Dieter <rdieter@fedoraproject.org>
@@ skipping 14 matching lines @@
 cat << _USAGE
 _USAGE
 }
 
 #@xdg-utils-common@
 
 terminal_kde()
 {
     terminal=`kreadconfig --file kdeglobals --group General --key TerminalApplication --default konsole`
 
-    terminal_exec=`which $terminal >/dev/null 2>/dev/null`
+    terminal_exec=`which $terminal 2>/dev/null`
 
     if [ -x "$terminal_exec" ]; then
         if [ x"$1" == x"" ]; then
             $terminal_exec
         else
             $terminal_exec -e "$1"
         fi
 
         if [ $? -eq 0 ]; then
             exit_success
@@ skipping 113 matching lines @@
         TERM=xterm
     fi
     DE=generic
 fi
 
 case "$DE" in
     kde)
     terminal_kde "$command"
     ;;
 
-    gnome)
+    gnome*)
     terminal_gnome "$command"
     ;;
 
     xfce)
     terminal_xfce "$command"
     ;;
 
     lxde)
     terminal_lxde "$command"
     ;;
 
     generic)
     terminal_generic "$command"
     ;;
 
     *)
     exit_failure_operation_impossible "no terminal emulator available"
     ;;
 esac