Vilmos Nebehaj.

Issue #11638: Adding test to ensure .tar.gz files can be generated by sdist command with unicode metadata, based on David Barnett's patch.
Issue #11638: Added tests to capture failures in make_tarball with various unicode strings.
Following fix for Issue #13639, these tests now pass.

dropped connections in case of simultaneous connection requests.

Issue12798 - Update mimetypes documentation. Correct the doc section where
common_types was mentioned under MimeTypes class, move it to helper function
category and other documentation improvements contributed by Sandro Tosi.

maintained only till 2.5 and tests had failures with 2.7) and update the links
int the howto document.

Passing a unicode filename to tarfile.open() along with mode "w|gz" failed
with a UnicodeError because the filename was not encoded properly before being
written to the gzipped stream in the FNAME extra field.

(2.7-only)

Also fixes issue #13581: `help(type)` wouldn't display anything.

support multiprocessing.Event.

failing.

traceback if Python is optimized.

 * delay the lookup of the size_t type, it is not available at startup
 * The second argument of the PyFrameObjectPtr constructor is optional, as
   done in other constructors
 * iter_builtins() and iter_globals() methods of PyFrameObjectPtr returns
   an empty tuple instead of None if Python is optimized
 * Fix py-bt to handle correctly "optimized" frames
 * Frame.get_pyop() tries to get the frame pointer from PyEval_EvalCodeEx()
   if the pointer is optimized out in PyEval_EvalFrameEx()

race condition).