Expand OpenSSL DTLS compatibility to include Ubuntu 10.04 (Lucid Lynx)

Expand OpenSSL DTLS compatibility to include Ubuntu 10.04 (Lucid Lynx)

They appear to have backported the Cisco DTLS compatibility, but their
OpenSSL is otherwise so old that our workaround for the absence of
dtls1_stop_timer() doesn't work. The timer handling is entirely different
there. So after an archaeological expedition through OpenSSL CVS history
and RT, cope a little better with such abominations.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>