creating ap_array_index in util, forwarding scheme into request processing,...

creating ap_array_index in util, forwarding scheme into request processing, enabling SSL vars only when scheme is not http:, delayed connection creation until task worker assignment

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1696428 13f79535-47bb-0310-9956-ffa450edef68