`PyObject_GetBuffer` fails.  Patch by Florent Xicluna.

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

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  r77855 | benjamin.peterson | 2010-01-30 17:32:05 +0100 (Sa, 30 Jan 2010) | 1 line

  don't return node if it is not changed
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  r77856 | benjamin.peterson | 2010-01-30 17:35:29 +0100 (Sa, 30 Jan 2010) | 1 line

  return None to indicate no change
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  r77870 | benjamin.peterson | 2010-01-31 02:21:26 +0100 (So, 31 Jan 2010) | 1 line

  never return the original node given to transform()
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py3k was already patched by issue #3661.

  file position when calling `truncate()`.  It would previously change the
  file position to the given argument, which goes against the tradition of
  ftruncate() and other truncation APIs.  Patch by Pascal Chambon.

move exception descriptions to toplevel, not inside a class
remove attribution in "versionadded"
spell and grammar check docstring of FTP_TLS

  PYTHONDONTWRITEBYTECODE, PYTHONNOUSERSITE).

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

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  r77419 | benjamin.peterson | 2010-01-10 21:39:48 +0100 (So, 10 Jan 2010) | 1 line

  enclose path in quotes to handle paths with spaces correctly #7666
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  r77435 | alexandre.vassalotti | 2010-01-12 01:36:54 +0100 (Di, 12 Jan 2010) | 2 lines

  Issue #1967: Add fixer for dictionary views.
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