EAP TTLS woes

[adrian.p.smith at bt.com]

>  You might try upgrading OpenSSL and/or checking the list of ciphers, digests, etc.  If you're running OpenSSL from 2013, it will default to encryption methods which have likely been deprecated and/or forbidden in recent versions of Windows.

>  Try using a new VM with a newer version of OpenSSL.  If that works, then the failure is some magic with an 8 year-old version of OpenSSL.

What's the highest version of openssl I can use when building FreeRadius?