ed_classified 5.x-1.5-8

This is the recommended version for Drupal 5, preferred over 5.x-1.6, which is just a final dev release.

Fixes:
- Expired ad node deletion on cron run fixed (issue http://drupal.org/node/135411)
- Reduced watchdog noise on classified node deletion.
- Added credit link at bottom of category listings. We ask that you do not remove this, but if you do, you can remove this by implementing a theme function named 'ed_classified_credits', and return whatever string you wish (or an empty string).