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.

LC_ALL is read before LANG to choose the locale encoding (LC_ALL, LANG and then
LC_CTYPE: use the first non empty variable).

Two character years are now converted to four character years using
the Posix standard rule (<68 == 2000, >=68==1900).  This makes the
parsed date RFC2822 compliant even if the input is not.

Patch and test by Jeffrey Finkelstein.

This test is irrevelant on Windows

_Py_char2wchar() (mbctowcs) decodes b'\xff' to '\xff' on FreeBSD, Solaris and
Mac OS X, even if the locale is C (and the locale encoding is ASCII). Patch
test_undecodable_code() to support this output and document the two different
kinds of outputs.

Issue 8781: On systems a signed 4-byte wchar_t and a 4-byte Py_UNICODE, use memcpy to convert between the two (as already done when wchar_t is unsigned)

Related to the fix for issue #9572. Thanks to Łukasz Czuja for catching the
bug.

Issue 8750: Fixed MutableSet's methods to correctly handle reflexive operations, namely x -= x and x ^= x