On the 2.4.x branch:

merge of 1804530,1804531,1805186,1806939,1807232,1808122 from trunk.

Backport of mod_md support in mod_ssl.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1820075 13f79535-47bb-0310-9956-ffa450edef68