Issue #17034: Use Py_CLEAR() in bytesobject.c.
Fix the test for issue #6972.
Remove trailing dots on Windows.
Back out fix for issue #13886; it introduced a new bug in interactive readline use.
Issue #15633: httplib.HTTPResponse is now mark closed when the server sends less than the advertised Content-Length.
Simplify code in HTTPResponse.read()
Issue #16698: Skip posix test_getgroups when built with OS X
deployment target prior to 10.6.