Fixed problem with mod_cgi-generated internal redirects trying to read

the request message-body twice.  The owners of mod_fastcgi and mod_php
(and any other input-reading modules that might generate an internal
redirect) should check their code for the same problem.
Also removed the redundant check in should_client_block.

Submitted by: Archie Cobbs <archie@whistle.com>, Roy Fielding


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77601 13f79535-47bb-0310-9956-ffa450edef68