Releases for UC Upsell

Start for the branch of 6.x-2.x for Upsell.

PLEASE NOTE: The functionality here is exactly the same as 6.x-1.20.

This fixes, definitively, the Upsell array "was updated" error message that was pervaisive in 6.x-1.16 and 6.x-1.18. Upgrading is recommended!

This also removes the "Multibuy" functionality in lieu of putting it in this version - I'm going to include that in version 2.x, since that is a major feature shift.

9/3/2009 - v.6.x-1.16
-----------------
- Changed handler for product images. It's configured now to use either the node-type default,
or the Ubercart default of "uc_product" unless something else is configured in the Upsell settings.
NOTE: If your images are now showing up, or with the incorrect Imagecache preset, check this first!

- Added "one-to-one" and "one-to-many" options in the way reciprocals are associated.

This release fixes several issues from the Issue Tracker, including arrays being null and duplicate products being displayed.

Includes array_merge bugfixes and enhancements to the relationship associations - changed the many-to-one association to a many-to-many. Still could use some testing but I believe it's solid.

This adds files back in. Whoopsie!

Fixes the schema install and update procedure.

Removes the upid field from the 6.x version.

Imagecache2 compatibility and othr features.

This adds Imagecache 2.x functionality as well as changes to the way the Default configuration is set.

The latest Dev release (Aug 29) includes some changes to the way the Images are handled. You'll need to double-check that your Imagefield for the Upsell block is the correct one otherwise you could end up seeing wrong (or no) images in the block.