[FIX] expression: allow exclusion of records with translated fields

Manual forwardport of revid 3672 chs@openerp.com-20140106195143-u3gxmfm9ifg9k3u0 from 6.0 branch
[FIX] expression: allow exclusion of records with translated fields
[FIX] base: correct tests
Launchpad automatic translations update.
Launchpad automatic translations update.
Launchpad automatic translations update.
[FIX] Allow missing opcodes, harden check for private attributes (dunder), check inside embedded code objects.