Message 225103 - Python tracker

Thanks to Ben and Glyph for their feedback. The memory BIO should allow ProactorEventLoop to support SSL. I say "should" because I have not looked at it myself. However, my Gruvi project is proactor (libuv) based and I have a private branch where SSL support is working using a proactor API.

I need a few more days to create an updated patch. This patch will include Antoine's suggestion of passing the SSLObject instance to the servername callback, and an update to the docs.