When receiving http on https, send the error response with http 1.0

When receiving http on https, send the error response with http 1.0
It is important that we send a proper error status, or search engines
may index the error message.

Remove the link in the speaking-http-on-https error message.
With SNI, the link will usually be wrong. So better send no link at all.

PR: 50823

Backport of r1328325 and r1328326 from trunk resp.
r1334346 from 2.4.x.

Submitted by: sf
Backported by: rjung
Reviewed by: wrowe, rpluem

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1446642 13f79535-47bb-0310-9956-ffa450edef68