image_gallery_access 5.x-1.1

Enhancements:
- Implement new hook_node_access_explain().
- Remove deprecated db_num_rows() call; see http://drupal.org/node/163191.
Bugs fixed:
- Don't disturb the _taxonomy_term_select structure (was an incompatibility with og_forum!).
- Avoid generating a watchdog warning when saving an image with no gallery selected.
- Fix image_gallery_access_node_access_records() and add caching.
- Remove install() and uninstall() messages.

Image Gallery Access requires the current ACL module, version 5.x-1.5 or later.