[bind10-dev] fixes/improvements

[Francis Dupont]

> We just started a sprint two days ago, so unless there's anything that
> has high priority in here I'll be happy to put these into a ticket and
> propose it for the next one

=> it should be fine to fix the bugs, in particular when there were
already signaled. BTW only the iterator one could be hard to fix,
and only if you'd like to avoid a quick and dirty way (cf the one
I use in trac826 branch).

Thanks

Francis Dupont <fdupont at isc.org>