[ADD] Changes to lp:openupgrade-server/8.0 so far (revno. 5147)

This is injecting the OpenUpgrade-specific changes to a fork of odoo/trunk. I got these as follows:

The last 'proper' commit on lp:openobject-server/trunk is 5218, which corresponds to revision 4f5cc00 of odoo/master. I merged this bzr revision into lp:openupgrade-server/8.0, then took a diff between these corresponding versions of lp:openupgrade-server/8.0 and lp:openobject-server/trunk (using diff openobject-server openupgrade-server -rN --exclude=.bzr -U8 > diff). Then I applied this patch to the git branch and pushed to this location.

Should be a decent starting point.