A POST request to a CGI script that fails can be redirected to another

CGI to handle via ErrorDocument 500.

Apache uses:
	     if (!r->read_chunked && (r->remaining <= 0))

to decide if it should read the POSTed data, but the 2nd script can't
find any POSTed data so it'll hang. If the script doesn't look for POSTed
data Apache does, so it hangs.
Reviewed by: Alexei Kosut, Randy Terbush, Rob Hartill
Submitted by: Rob Hartill


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77435 13f79535-47bb-0310-9956-ffa450edef68