OpenBSD older than 5.5

Vajrasky Kok.

also typo. Patch written by Vajrasky Kok.

- now also allows POSIX installation with SSL/TLS missing
- a goal for pip 1.6 is to allow local use without SSL/TLS

regression: don't clear anymore the state of Python threads early during the
Python shutdown.

the address is not resolved (hostname instead of an IP address) for AF_INET and
AF_INET6 address families.

FreeBSD 8

the list of futures is not a list but a Future, Task or coroutine object

parameters

call_at() and run_in_executor() now raise a TypeError if the callback is a
coroutine function.

should be printed

than timeout

scheduled tasks should be executed or not.

test more reliable (= fail more often on Windows with HPET enabled).