Some small bugfixes to the dimension support part. Added instructions and files to extend dimensions support with the ability to split products in several items for packaging (screenshot included).
For upgrading from 1.2.6 to 1.2.7 you only need to replace catalog/includes/modules/shipping/upsxml.php and admin/packaging.php. To add the splitting of products follow the instructions in the file split_products_instructions.txt (after having added dimensions support).

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