flashnode 5.x-4.1

Some previous changes were lost in the commit of version 4 of flashnode. This version reinstates them.

Note - you must upgrade to version 5.4 or later of Flash node before moving your site to Drupal 6 and Flash Node 6. A change in the structure of the core {files} table will result in your flash content becoming broken if you do not install Flash node 5.4 or higher and run the update.php script.