Merge r1500042 from trunk:

address comment http://httpd.apache.org/docs/2.4/vhosts/examples.html#comment_1441 by
explicitly mentioning that ServerName may be calculated and inherited.




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1500043 13f79535-47bb-0310-9956-ffa450edef68