Merge r1532746 from trunk:

No more magic numbers.
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1540721 13f79535-47bb-0310-9956-ffa450edef68
Committed revision 1540721.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1540722 13f79535-47bb-0310-9956-ffa450edef68