activate PyOpenSSL if available
activate PyOpenSSL if available

this brings support for SNI to python 2.x for servers that need it, and
disables SSL/TLS compression (good for mitigating CRIME)

also requires ndg-httpsclient and pyasn1

tested with python 2.7.8 against nginx 1.6 utilizing SNI (and where the
required certificate was not the first one presented)

Savar/pycarddav,geier/pycarddav,Savar/pycarddav,geier/pycarddav