Separate the handling of backend and client requests, greatly simplifying both.
Separate the handling of backend and client requests, greatly simplifying
both.

Skip piped requests, and requests that are interrupted by an error.  This
should eliminate or at least greatly reduce the (null)s seen in logs.

Fix a conditional that blocked backend requests from being printed.


git-svn-id: 2c9807fa3ff65b17195bd55dc8a6c4261e10127b@2445 d4fa192b-c00b-0410-8231-f00ffab90ce4

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