macro Py_SETREF.

Added tests for dict views.

This allows sys.getsize() to work correctly with their subclasses with
__slots__ defined.

and some tests no longer behaves incorrectly in the presence of the
PYTHONHASHSEED environment variable.

in ElementTree.iterparse().

and link with OpenSSL 1.0.2e.

Initialize package before calling get_loader() for __main__, so that we do
not incorrectly handle ImportError from __init__.py. When runpy is used from
the Python CLI, use an internal exception rather than ImportError, to avoid
catching an unexpected ImportError.

Also simplify message formatting: str() is redundant with %s.

Also fix test_dash_m_error_code_is_one() in test_cmd_line_script, which was
failing because the test package was not in the current directlry, rather
the desired ValueError.

with time.tzset().