mod_proxy_fcgi: follow up to r1638818.
Let ap_scan_script_header*() validate the headers.

git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1639812 13f79535-47bb-0310-9956-ffa450edef68
mod_authnz_fcgi: follow up to r1639717.
Let ap_scan_script_header*() validate the headers.

git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1639814 13f79535-47bb-0310-9956-ffa450edef68