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

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

Index: third_party/xdg-utils/scripts/xdg-mime.in
===================================================================
--- third_party/xdg-utils/scripts/xdg-mime.in	(revision 79909)
+++ third_party/xdg-utils/scripts/xdg-mime.in	(working copy)
@@ -73,14 +73,17 @@
 
 info_gnome()
 {
-    file=`readlink -f "$1"` # Normalize path
-
     if gvfs-info --help 2>/dev/null 1>&2; then
-        DEBUG 1 "Running gvfs-info \"$file\""
-        gvfs-info "$file" 2> /dev/null | grep standard::content-type | cut -d' ' -f4
+        DEBUG 1 "Running gvfs-info \"$1\""
+        gvfs-info "$1" 2> /dev/null | grep standard::content-type | cut -d' ' -f4
+    elif gnomevfs-info --help 2>/dev/null 1>&2; then
+       DEBUG 1 "Running gnomevfs-info \"$1\""
+       gnomevfs-info --slow-mime "$1" 2> /dev/null | grep "^MIME" | cut -d ":" -f 2 | sed s/"^ "//
     else
-       DEBUG 1 "Running gnomevfs-info \"$file\""
-       gnomevfs-info --slow-mime "$file" 2> /dev/null | grep "^MIME" | cut -d ":" -f 2 | sed s/"^ "//
+       # according to https://bugs.freedesktop.org/show_bug.cgi?id=33094#c5
+       # neither gvfs-info or gnomevfs-info are present in a default Ubuntu Natty
+       # install, so fallback to info_generic
+       info_generic "$1"
     fi
 
     if [ $? -eq 0 ]; then
@@ -92,8 +95,13 @@
 
 info_generic()
 {
-    DEBUG 1 "Running file -i \"$1\""
-    /usr/bin/file -i "$1" 2> /dev/null | cut -d ":" -f 2 | sed s/"^ "//
+    if mimetype --version >/dev/null 2>&1; then
+        DEBUG 1 "Running mimetype -b \"$1\""
+        mimetype -b "$1"
+    else
+        DEBUG 1 "Running file -i \"$1\""
+        /usr/bin/file -i "$1" 2> /dev/null | cut -d ":" -f 2 | sed s/"^ "//
+    fi
 
     if [ $? -eq 0 ]; then
         exit_success
@@ -329,6 +337,7 @@
             ;;
         esac
         check_input_file "$filename"
+        filename=`readlink -f -- "$filename"`
         ;;
 
       default)
@@ -422,7 +431,7 @@
         info_kde "$filename"
         ;;
 
-        gnome)
+        gnome*)
         info_gnome "$filename"
         ;;