Patch by Saimadhav Heblikar.

* "ctypes" documentation was using Python 2 bytes-str equivalence.
* PyImport_FrozenModules is a pointer to const as of Python 3.4

Patch by Philip Jenvey

Patch by Vincent Michel.
See also https://github.com/python/asyncio/pull/326

Patch by Philip Jenvey

test_different_file.

Patch contributed by Chi Hsuan Yen.

It is better to not change this in bugfix release.

Original patch by James Edwards.

Patch from Xiang Zhang.

This was inadvertently changed in 644b677c2ae5 to use self._stderr
instead of _sys.stderr.

_tkinter and curses.panel modules.

Based on patch by Julien.

example.com/404 returns 500 instead of 404 now.

Patch by Georg Brandl.

Patch by Alex Chan.