sslutil: move _canloaddefaultcerts logic We now have a newer block accessing SSLContext. Let's move this code to make subsequent refactorings of the former block easier.

sslutil: implement SSLContext class Python <2.7.9 doesn't have a ssl.SSLContext class. In this patch, we implement the interface to the class so we can have a unified code path for all supported versions of Python. This is similar to the approach that urllib3 takes.

sslutil: store OP_NO_SSL* constants in module scope An upcoming patch will introduce a global SSLContext type so we have a single function used to wrap sockets. Prepare for that by introducing module level constants for disabling SSLv2 and SSLv3.

sslutil: better document state of security/ssl module Pythons older than 2.7.9 are lacking the modern ssl module and have horrible security. Let's document this explicitly.

tests: make tinyproxy.py use print_function

run-tests: use canonpath for with-python3

run-tests: add canonpath function consistently use realpath+expanduser

tests: glob py3 line numbers Since not everyone is running py3.5 and code changes periodically, avoid pinning line numbers for invalid syntax errors.

tests: update py3.5 output 6d7da0901a28 removed one item...

summary: move mergemod before parents to give access to ms