[rfc][merge] ban assert statements

[Vincent Ladeuil]

>>>>> "martin" == Martin Pool <mbp at canonical.com> writes:

    martin> I think we should ban assert statements from Bazaar: they cause bugs
    martin> and don't particularly help:

+1

        Vincent

<snip/>

    martin> 16:30 <spiv> I guess I've talked myself into agreeing with you :)

Same path roughly followed when Martin raised the question some
months ago ;-)