Hi Ralf:

> It has the possibly undesired side effect of removing quiet
> parameters from oldvalues.
>
> The commit message has details on how we can restructure so that
> the quiet params are filtered on return from set(), but
> made available to the reactors.

I added changeset:   8833:36852e27e1a1 to extract quiet parameter
filtering from set_inner
and moved it to the parent set() method. I apply it after the reactors
are called
before set() returns and provides the changed properties to the
confirmation method.

Comments?