Added a simple call to menu_rebuild() in an hook_update_N function to clear the menu cache for the fix of #609150

#550995: Admin editing gallery changes user ID & #784328: pathauto creates url collisions for node gallery

#791930: warning: Parameter 1 to theme_gallery_edit_images_form() expected to be a reference, value given in /usr/share/drupal6/includes/

#701456: Authenticated User gets error message after image upload but Admin doesn't. Error: Invalid argument.... form.inc on line 1429

Bringing in all the changes made in 6.x-2.x-dev into HEAD so that we can do development in HEAD and port patches to the branches from there.

* Added two new theme functions to allow for more custom markup: theme_node_gallery_image() and theme_node_gallery_teaser()

* Fixed a bug that caused many saved settings not to be loaded while editing an established Node Gallery Relationship
* Added the ability to have a cover view as the Gallery landing page
* Added the ability to select a preset for the Gallery landing page.

in the administration menu.
* Lightbox2 gallery support both from teasers and gallery landing pages.

node/add page to avoid confusion as to where to upload images.

* Added basic Lightbox2 support so users can choose to display a large-size version of the upload in a Lightbox
* Added an option to allow users to download the original photo as a text link.  Administrators also have the ability to customize the download text.

* Fixed the copy in the upload notes that caused the "MB" to show up twice.

Fixed a bug in node-image-default.tpl.php and node-gallery-default.tpl.php files that caused div.taxonomy show up and the word "in" even if there was no taxonomy to display.

Fixed an issue with the install file that did not install the imagecache presets on a *fresh* installation of the node_gallery.module.