Initial port of Sprite Menu to Drupal 7. Users upgrading from Drupal 6 should be able to simply replace the old module with the new copy. An upgrade path is included that ports the module for upgrading users from Drupal 6.
. Important bug fix. Wrong use of a file API function was leading to the system.module garbage collector to remove uploaded images on cron run. If this happened to you, please re-submit the sprites after upgrading this module.
. Some code to detect orphaned sprite menu entries and remove them in order to keep the CSS small and clean