W.r.t. http://svn.apache.org/r1719967 - I'm +1 for the backport. I'd like to propose we remove all support from *trunk* for OpenSSL < 1.0.1 effective now...
https://mta.openssl.org/pipermail/openssl-announce/2014-December/000000.html We don't deprecate support on maintenance branches (e.g. 2.2/2.4), because we seek to minimize the pain of moving from one subversion release to another. If someone wanted to hack a non-fatal warning for the ./configure phase, that could be a worthwhile patch.