First part of product migration analysis.
XML ID migration complete
fix missing dependency in product in v8
updated product migration analysis
first pass at product migration script
fix bad refactoring
compute active attribute of template from attribute of variants
copy product_product.image to product_product.image_variant
updated work analysis
migration of product.packaging and product.ul
migration of product_template.cost_method, moved in stock_account
reinstall data from product moved to mrp
add migration for product.packaging to template
fix error in previous refactoring
Add function add_xmlid to OpenUpgrade API
Merge branch 'product-v8-migration' of https://github.com/guewen/OpenUpgrade into product-v8-migration
Migrate product_template.standard_price.

Now a fields.property so the prices are moved to properties.
Also, entries for the prices will be created in product_price_history.
[ADD] check value for ir_ui_view.type field.
[REF] Remove useless field migration because 'oldname' is defined;
Updated openupgrade_analysis_WORK.txt with comments
Take into account the remarks of Stefan :
- noupdate defaults to False
- don't use %d in pscopg
- don't update the existing entry in ir_model_data