[Python-checkins] cpython: Mention OSError instead of IOError in the docs.

[Serhiy Storchaka]

On 19.12.12 09:24, Nick Coghlan wrote:
> With any of these changes in the docs, please don't forget to include
> appropriate "versionchanged" directives. Many people using the Python 3
> docs at "docs.python.org/3/ <http://docs.python.org/3/>" will still be
> on Python 3.2, and thus relying on the presence of such directives to
> let them know that while the various OS-related exception names are now
> just aliases for OSError in 3.3+, the distinctions still matter in 3.2.

I also propose to apply all this documentation changes to 3.3.