Attached minimal patch updates http.client.HTTPSConnection to validate certs by default and adjusts test.test_httplib accordingly.

It doesn't currently include any docs changes, or changes to urllib.

The process wide "revert to the old behaviour" hook is to monkeypatch the ssl module:

    ssl._create_default_https_context = ssl._create_unverified_context

To monkeypatch the stdlib to validate *everything* (this one isn't new, just noting it for the record):

    ssl._create_stdlib_context = ssl.create_default_context