Add a warning if protocol given in SSLProtocol  or SSLProxyProtocol will override other parameters given in the same directive.
This could be a missing + or - prefix.

PR 52820

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1520445 13f79535-47bb-0310-9956-ffa450edef68