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Initial patch by Sergey Mezentsev.

Patch by Serhiy Storchaka.

Patch by Hynek Schlawack.

Patch by Serhiy Storchaka.

the DST transition.  Patch by Joe Peterson.

up the decimal module. Performance gains of the new C implementation are
between 12x and 80x, depending on the application.

This helper was changed to work with any object instead of only modules
(or technically something with a __name__ attribute, see code in 3.2)
but the message stayed as is.

memory watchdog for timely stats collection.

- bigmemtest is replaced by precisionbigmemtest
- add a poor man's watchdog thread to print memory consumption

Windows does set the errno attribute to ENOENT, but the error message
displays the Windows error number (3 -> ERROR_PATH_NOT_FOUND), not the
errno number (2 -> ENOENT).
The Unix errno corresponding to 3 is ESRCH, explaining the confusion,
which can be seen in the following snippet:

>>> shutil.rmtree("foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "Z:\default\lib\shutil.py", line 272, in rmtree
    onerror(os.listdir, path, sys.exc_info())
  File "Z:\default\lib\shutil.py", line 270, in rmtree
    names = os.listdir(path)
WindowsError: [Error 3] The system cannot find the path specified:
'foo\\*.*'
>>> e = sys.last_value
>>> e.errno
2
>>> e.winerror
3
>>> errno.errorcode[2]
'ENOENT'

For reference, see PC/errmap.h and
http://msdn.microsoft.com/en-us/library/ms681382%28v=vs.85%29.aspx

(more than 2**31 items).  Instead, in most cases, an OverflowError is raised.

 * Use str.startswith(tuple): I didn't know this Python feature, Python rocks!
 * Replace sometimes sys.platform.startswith('linux') with
   sys.platform == 'linux'
 * sys.platform doesn't contain the major version on Cygwin on Mac OS X
   (it's just 'cygwin' and 'darwin')

with the `-m` (or `--match`) option.  This works with all test cases
using the unittest module.  This is useful with long test suites
such as test_io or test_subprocess.

running in verbose mode (`-v` or `-W`), by using the `--failfast`
(or `-G`) option to regrtest.  This is useful with long test suites
such as test_io or test_subprocess.

Based on original patch by Giampaolo Rodola with contributions from R. David Murray

failure in name resolution.

Should fix a buildbot failure.

failure in name resolution.

Should fix a buildbot failure.

We don't need to create a temporary buffered binary or text file object just to
create an empty file.

Replace also os.fdopen(handle).close() by os.close(handle).

regrtest doesn't check that tests doesn't write something to stdout anymore.

Don't replace sys.stdout by the original sys.stdout to be able to capture the
output for regrtest -W.

Use of DeviceIoControl to obtain the symlink path via the reparse tag was
removed. The code now uses GetFinalPathNameByHandle in the case of a
symbolic link and works properly given the added test which creates a symbolic
link and calls os.stat on it from multiple locations.

Victor Stinner also noticed an issue with os.lstat following the os.stat
code path when being passed bytes. The posix_lstat function was adjusted to
properly hook up win32_lstat instead of the previous STAT macro (win32_stat).

descriptor of a pipe closed in the parent process is valid in the child process
according to fstat(), but the mode of the file descriptor is invalid, and read
or write raise an error.

Add also requires_mac_ver() decorator to test.support.

Add also linux_version() to __all__.

underlying OS pipe buffer size.

Skip tests that require zlib in the packaging tests.  Also add a requires_zlib decorator to test.support.