getaddrinfo takes an exclusive lock on some platforms, causing clients to queue
up waiting for the lock if many names are being resolved concurrently. Users
may want to handle name resolution in their own code, for the sake of caching,
using an alternate resolver, or to measure DNS duration separately from
connection duration. Skip getaddrinfo if the "host" passed into
create_connection is already resolved.

See https://github.com/python/asyncio/pull/302 for details.

Patch by A. Jesse Jiryu Davis.

parameter to "enable" the always on sys.flags.hash_randomization
in _args_from_interpreter_flags() used by multiprocessing and
some unittests.  This simplifies the code.

due to test_hash_randomization expecting a different seed per process.

See https://github.com/python/asyncio/pull/303 for details

in ElementTree.iterparse().

and link with OpenSSL 1.0.2e.

The OS X buildbots were failing at the second setrlimit() call with EPERM, as
if they were trying to raise the hard limit. The call should be keeping the
hard limit the same and raising the soft limit back to its original value, so
I don't understand the failure.