Bring xdg-utils up to date as of 2009-07-27.

third_party/xdg-utils/scripts/xdg-icon-resource.in

 #!/bin/sh
 #---------------------------------------------
 #   xdg-icon-resource
 #
 #   Utility script to install icons on a Linux desktop.
 #
 #   Refer to the usage() function below for usage.
 #
 #   Copyright 2006, Kevin Krammer <kevin.krammer@gmx.at>
 #   Copyright 2006, Jeremy White <jwhite@codeweavers.com>
@@ skipping 363 matching lines @@
     fi
     my_umask=022
 fi
 # End KDE legacy workaround section
 
 # Start GNOME legacy workaround section
 need_gnome_mime=
 [ $context = "mimetypes" ] && need_gnome_mime=true 
 # End GNOME legacy workaround section
 
-[ -n "$icon_name" ] || icon_name=`basename $icon_file | sed 's/\.[a-z][a-z][a-z]$//'`
+[ -n "$icon_name" ] || icon_name=`basename "$icon_file" | sed 's/\.[a-z][a-z][a-z]$//'`
 
 if [ "$vendor" = "true" -a "$action" = "install" -a "$context" = "apps" ] ; then
     check_vendor_prefix "$icon_name" "icon name"
 fi
 
 icon_icon_file=`echo "$icon_file" | sed 's/\.[a-z][a-z][a-z]$/.icon/'`
 icon_icon_name="$icon_name.icon"
 
 DEBUG 1 "$action icon in $xdg_dir"
 [ $action = "install" -a -f $icon_icon_file ] && DEBUG 1 "install $icon_icon_name meta file in $xdg_dir"
@@ skipping 43 matching lines @@
 if [ x"$update" = x"yes" ] ; then
     update_icon_database "$xdg_base_dir"
     if [ -n "$dot_icon_dir" ] ; then
         if [ -d "$dot_icon_dir/" -a ! -L "$dot_icon_dir" ] ; then
             update_icon_database $dot_base_dir
         fi
     fi
 fi
 
 exit_success