[Twisted-Python] Add support for Next Protocol Negotiation and Application Layer Protocol Negotiation

[Adi Roiban]

Hi,

I just want to let you know about this patch which is in work :
https://twistedmatrix.com/trac/ticket/7860

I did an initial review but it would help to get more feedback for this new API.

Also it depends on a new pyOpenSSL 0.15 version. Do we have a
buildslave with this version?
What is the process of testing / reviewing this kind of patches?

Many thanks!
-- 
Adi Roiban