to non-blocking mode. The non-blocking mode does not matter when using a
ProactorEventLoop, only for SelectorEventLoop.

* PipeServer.close() now cancels the "accept pipe" future which cancels the
  overlapped operation.
* Fix _SelectorTransport.__repr__() if the transport was closed
* Fix debug log in BaseEventLoop.create_connection(): get the socket object
  from the transport because SSL transport closes the old socket and creates a
  new SSL socket object. Remove also the _SelectorSslTransport._rawsock
  attribute: it contained the closed socket (not very useful) and it was not
  used.
* Issue #22063: socket operations (sock_recv, sock_sendall, sock_connect,
  sock_accept) of the proactor event loop don't raise an exception in debug
  mode if the socket are in blocking mode. Overlapped operations also work on
  blocking sockets.
* Fix unit tests in debug mode: mock a non-blocking socket for socket
  operations which now raise an exception if the socket is blocking.
* _fatal_error() method of _UnixReadPipeTransport and _UnixWritePipeTransport
  now log all exceptions in debug mode
* Don't log expected errors in unit tests
* Tulip issue 200: _WaitHandleFuture._unregister_wait() now catchs and logs
  exceptions.
* Tulip issue 200: Log errors in debug mode instead of simply ignoring them.

* dev: mention that the logging must be configured at DEBUG level
* streams: drain() has no more a strange return value, it's just
  a standard coroutine

posixpath.join().

window is created for every test class.

Fixed Tkinter images copying operations in NoDefaultRoot mode.

Tcl command names generated for "after" callbacks now contains a name of
original function.

python --generate-posix-vars in pybuilddir.txt build target by ensuring
that pybuilddir.txt is always regenerated when configure is run and
that the newly built skeleton python does not inadvertently import
modules from previously installed instances.

Thanks to Arfrever Frehtes Taifersar Arahesis.

it don't raise an exception if doraise is False.

Patch by Bohuslav "Slavek" Kabrda.

Thanks to Jon Poler for the patch.

Do not aggresively close wfile in the do_GET method in the BasicAuthHandler.

Fix Issue #8797: Raise HTTPError on failed Basic Authentication immediately. Initial patch by Sam Bull.

'As' became a full keyword when with statements were added in 2.5/2.6.

Patch from Thomas Kluyver.

extracts ZIP files with directory entries.  Patch by Ryan Wilson.

any .gdbinit initialization files".

test_debugmallocstats should be marked as such. Patch written by Martin
Matusiak.

Fix Issue #8797: Raise HTTPError on failed Basic Authentication immediately. Initial patch by Sam Bull.

Will forward port 22095 changes separately.