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).

PyUnicode_AsWideChar() may contain embedded null characters.

Patch written by Arnaud Calmettes.

Patch by Cédric Krier.

condition variables to avoid deadlocks in child processes.

redirection or an error.

Patch written by Arnaud Calmettes.

effect of appearing to resolve the issue.  Thanks to Mark Shannon for
noticing.

files, display a message popup and continue rather than crash.
(original patch by Roger Serwy)

Australian Eastern Standard Time (UTC+10) is called "EST" (as Eastern Standard
Time, UTC-5) instead of "AEST" on some operating systems (e.g. FreeBSD), which
is wrong. See for example this bug:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=93810