Merge r1685779 from trunk:

mod_ssl: Remove deprecated SSLCertificateChainFile warning.
Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1685870 13f79535-47bb-0310-9956-ffa450edef68