* Document the post conditions for bisect_left() and bisect_right().
* Fix the grades example to use more obvious breakpoints
  and to use a list comprehension instead of map() which returns
  an iterator in Py3.x.
* Improve and expand the examples of searching sorted lists.
* Issue 4356 -- move up reference to the SortedCollection recipe.

avoid issues when socket.close is called from a __del__ method.

fine.  They were failing due to a problem exposed in r84307 and fixed
in r84317.   See Issue 8781 for details.

Fix issue #9711: raise ValueError is SSLConnection constructor is invoked with keyfile and not certfile.

Sébastien Sablé.

in ssl tests rely on IOError.errno rather thanf IOError.strerror for better compatibility across platforms.

Raise ValuError if non-zero flag argument is provided for sendall() method for conformity with send(), recv() and recv_into()

to the socket module, and fix the width of socket descriptors to be
correctly detected under 64-bit Windows.

getting rid of the cached copy of thread-local attribute dictionary.

inputs to the nearest integer.  Thanks Neil Tallim for the patch.

and make.

already exists, not IOError.

Part of the continuing saga of issue #9572.