Update our copy of xdg-utils to 2010-08-30, and include a patched xdg-mime.

third_party/xdg-utils/scripts/xdg-settings

 #!/bin/sh
 #---------------------------------------------
 #   xdg-settings
 #
 #   Utility script to get various settings from the desktop environment.
 #
 #   Refer to the usage() function below for usage.
 #
 #   Copyright 2009, Google Inc.
 #
@@ skipping 192 matching lines @@
 exit_failure_file_permission_read()
 {
     if [ $# -gt 0 ]; then
         echo "xdg-settings: $@" >&2
     fi
 
     exit 5
 }
 
 #------------------------------------------------------------
-# Exit script on insufficient permission to read a specified file
+# Exit script on insufficient permission to write a specified file
 
 exit_failure_file_permission_write()
 {
     if [ $# -gt 0 ]; then
         echo "xdg-settings: $@" >&2
     fi
 
     exit 6
 }
 
@@ skipping 82 matching lines @@
 fi
 
 #--------------------------------------
 # Checks for known desktop environments
 # set variable DE to the desktop environments name, lowercase
 
 detectDE()
 {
     if [ x"$KDE_FULL_SESSION" = x"true" ]; then DE=kde;
     elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
-    elif xprop -root _DT_SAVE_MODE | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
+    elif `dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager > /dev/null 2>&1` ; then DE=gnome;
+    elif xprop -root _DT_SAVE_MODE 2> /dev/null | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
     fi
 }
 
 #----------------------------------------------------------------------------
 # kfmclient exec/openURL can give bogus exit value in KDE <= 3.5.4
 # It also always returns 1 in KDE 3.4 and earlier
 # Simply return 0 in such case
 
 kfmclient_fix_exit_code()
 {
@@ skipping 192 matching lines @@
 
 # Reads the KDE browser setting, compensating for a bug in some versions of kreadconfig.
 read_kde_browser()
 {
     browser="`kreadconfig --file kdeglobals --group General --key BrowserApplication`"
     if [ "$browser" ]; then
         echo "$browser"
     fi
     # kreadconfig in KDE 4 may not notice Key[$*]=... localized settings, so check
     # by hand if it didn't find anything (oddly kwriteconfig works fine though).
-    kdeglobals="${KDE_HOME:-$HOME/.kde}/share/config/kdeglobals"
+    kdeglobals_dir=`kde${KDE_SESSION_VERSION}-config --path config  | cut -d ':' -f 1`
+    kdeglobals="$kdeglobals_dir/kdeglobals"
     [ ! -f "$kdeglobals" ] && return
     # This will only take the first value if there is more than one.
     grep '^BrowserApplication\[$[^]=]*\]=' "$kdeglobals" | head -n 1 | cut -d= -f 2-
 }
 
 get_browser_kde()
 {
     browser="`read_kde_browser`"
     if [ x"$browser" = x ]; then
         # No explicit default browser; KDE will use the MIME type text/html.
@@ skipping 319 matching lines @@
     ;;
 
     generic)
     dispatch_generic "$@"
     ;;
 
     *)
     exit_failure_operation_impossible "unknown desktop environment"
     ;;
 esac