Use trusted validators median fee

This fixes the problem with people running validators that don't use the temporary new fee floor. Note that this has already been deployed:
https://github.com/ripple/rippled/commits/release

Reviewers: @JoelKatz @tdfischer
Approvers: @rec @nbougalis 
Please remember that code is read ten times for every one time it is worked
on.

I read this twice carefully and still was unable to figure out what sort of
thing v.second was without a deep dive elsewhere in the code.

Reading code is not supposed some sort of endurance game to build up your
skill.

On Wed, Oct 1, 2014 at 10:41 AM, Vinnie Falco <notifications@github.com>
wrote:

> In src/ripple/app/misc/Validations.cpp:
>
> >              {
> > -                if (it.second->isTrusted ())
> > +                if (v.second->isTrusted())
>
> I don't really know what the type of v.second is. And the great thing is
> that I was able to work on this code without knowing. Which is moderately
> strong evidence that the lack of a type was no impediment.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/ripple/rippled/pull/597/files#r18282604>.
>