What's the status of the following feeds that google requires, and which if any are offered natively in Odoo Saas (v8 possibly) ?

1. Main sitemap for google webmaster feed - sitemap.xml has all the files but no <changefreq> or <priority> tags - so might not be accepted by google
2. Images sitemap for google webmaster feed - to get listed on googles images database.
3. Product feed for Google Merchant account essential for getting product listing ads to show in Adwords - this needs to be able to provide information in specific language and currency combinations in order to be accepted within a specific territory on google merchant.