supporting objects as input no matter how it was compiled (built in
  implementations or external openssl library).
(backported from a py3k branch)

on LP64 platforms (most 64-bit Linux, bsd, unix systems).

test_fdopen (test_os.py) pass.

function without argtypes, if HAVE_USABLE_WCHAR_T is false.

Thanks Lisandro Dalcin.

negative arguments.  Previously, it raised TypeError.

Thanks Lisandro Dalcin.

Issue 4804.  Add a function to test the validity of file descriptors on Windows, and stop using global runtime settings to silence the warnings / assertions.

Fixed #3386: the optional prefix argument was ignored under OS2 and NT in distutils.sysconfig.get_python_lib

should be recreated. This created a timing hole. Fixed by just doing what
import does; check the mtime and magic number.

potential deadlock.

Checking for tk availability before continuing (basically the same that is done in test_ttk_guionly)

Tkinter.Text.search

It now forces its argument to double before testing for infinity.

Issue #5170: Fixed Unicode output bug in logging and added test case. This is a regression which did not occur in 2.5.

platforms.  The previous code was fragile, depending on the twin
accidents that:

  (1) in C, casting the double value 2.**63 to long returns the integer
      value -2**63, and
  (2) in Python, hash(-2**63) == hash(2**63).

There's already a test for this in test_hash.