refs https://issues.apache.org/bugzilla/show_bug.cgi?id=51967 Mention

that %h will sometimes log the IP address, and sometimes the hostname,
depending on HostNameLookup setting and the use of hostname-based
authorization directives.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1180500 13f79535-47bb-0310-9956-ffa450edef68