#8016: add the CP858 codec (approved by Benjamin).  (Also add CP720 to the tests, it was missing there.)

Fix default value for version help. Approved by Benjamin on python-dev: http://mail.python.org/pipermail/python-dev/2010-May/100231.html

argparse documentation updates (including updates to optparse and getopt documentation that were promised in the PEP)

svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r80937 | benjamin.peterson | 2010-05-07 14:10:58 -0500 (Fri, 07 May 2010) | 1 line

  remove redundant unicode call
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  r81478 | benjamin.peterson | 2010-05-22 13:47:39 -0500 (Sat, 22 May 2010) | 1 line

  ensure doctests have some future_features
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Rememder: don't touch the code just before a commit

 * Fix seek() method of codecs.open(), don't write the BOM twice after seek(0)
 * Fix reset() method of codecs, UTF-16, UTF-32 and StreamWriter classes
 * test_codecs: use "w+" mode instead of "wt+". "t" mode is not supported by
   Solaris or Windows, but does it really exist? I found it the in the issue.

after seek(0)

than strict

embedders of the interpreter to set sys.argv without also modifying
sys.path.  This helps fix `CVE-2008-5983
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5983>`_.

(e.g. from .os import sep) and it failed, import would still try the implicit
relative import semantics of an absolute import (from os import sep). That's
not right, so when level is negative, only do explicit relative import
semantics.

Fixes issue #7902. Thanks to Meador Inge for the patch.

Forward port some code from Python3:

 * join surrogate pairs if sizeof(Py_UNICODE)==2
 * Enable non-BMP test on narrow builds using u"\U0001D121" instead of
   unichr(0x1D121)

Fix issue #8573 (asyncore._strerror bug): fixed os.strerror typo; included NameError in the tuple of expected exception; added test case for asyncore._strerror.