Docs still need some updating to make getopt and optparse match the wording promised in the PEP.
There are also probably a number of :class:ArgumentParser etc. links that could be added to the argparse documentation.

because I did this in the wrong order and couldn't smack svnmerge into
submission.

Since this module is unmaintained in the library and gone in py3k,
this patch skips the remainder of the replication test if a
second timeout occurs, as it randomly does.  This should improve buildbot
stability.

a -1 parameter on some platforms such as OS X.

thread could raise an incorrect RuntimeError about not holding the import
lock.  The import lock is now reinitialized after fork.

os.waitpid and os.read system calls where appropriate.

instance stuck in initial state and present in threading.enumerate().

#8030: make builtin type docstrings more consistent: use "iterable" instead of "seq(uence)", use "new" to show that set() always returns a new object.

Clean test_subprocess: use assertRaises, skipIf, skipUnless helpers and a custom helper assertStderrEqual.