Marketplace Module: implementing shipping attribute to use in product export

The feed to export product into the markerplace has a new field called: logistic-class this field will be left blank as default, because the product weight will be used to calculate the real shipping class for a product. It may happen that the magento admin wants to change the default shipping cost based on weight and decide to assign another logistic class to the product. This feature needs a new product attribute called logistic_class for magento, scope Global, type select, with the values listed in the attached doc.