VCC backend functions should need busyobject argument

[Poul-Henning Kamp]

--------
In message <5661B886.1020107 at schokola.de>, Nils Goroll writes:

>The director VMOD backend functions can return their own object, in which case
>the resolve function will choose the "real" backend when an actual backend
>request is about to be issued. Alternatively, they can resolve (choose a
>backend) immediately and return a reference to a "real" backend object (or the
>next level down).
>
>For the latter way, there is no struct busyobj passed down, and
>we probably need to change that - otherwise stacking directors
>with vmod_saintmode won't work.

Uhm...  both dir->resolve() and dir->gethdrs() take a BO argument:

    typedef const struct director *vdi_resolve_f(const struct director *,
        struct worker *, struct busyobj *);

    typedef int vdi_gethdrs_f(const struct director *, struct worker *,
        struct busyobj *);


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