Make INFO work from *.penta files.

common/modules/storage.jsm

@@ -316,6 +316,11 @@ var File = Class("File", {
         return self;
     },
 
+    /**
+     * @property {nsIFileURL} Returns the nsIFileURL object for this file.
+     */
+    get URI() services.io.newFileURI(this),
+
     /**
      * Iterates over the objects in this directory.
      */