The 'product' module must list the 'report' module in its dependencies
because it refers to the 'report.abstract_report' module

Fixes #290
Merge pull request #292 from guewen/product-missing-report-dependency

[FIX] product: add module 'report' module in its dependencies

The product pricelist report model inherit from report.abstract_report but report was not present in dependencies.
Merge branch 'master' of https://github.com/odoo/odoo into master-win32