Robust Authentication Proxying

[Philip Molter]

Alan DeKok wrote:
> c) response_window being hit now does nothing other than start
>    the zombie period.  The first request that causes this is NOT
>    rejected.  The old behavior can still be configured if desired.

How does this change affect accounting handling?  Does the request now 
fail over to the next proxy server?  If the post_proxy_fail_handler 
isn't called, does that break any of the methods implemented in the 
robust accounting proxy example server?