Also fix some markup and typos.

Fix also spelling of the null character.

instead of the locale encoding.

sys.platform is now always 'linux2' on Linux (even on Linux 3)

Fix closes Issue11155  - Correct the multiprocessing.Queue.put's arg (replace 'item' with 'obj') in the docs. Patch by Westley Martínez.

tarfile unnecessarily checked the existence of numerical user and group ids on
extraction. If one of them did not exist the respective id of the current user
(i.e. root) was used for the file and ownership information was lost. (Patch
by Sebastien Luttringer)

#12888: Fix a bug in HTMLParser.unescape that prevented it to escape more than 128 entities.  Patch by Peter Otten.

sdist used to crash with a full traceback dump instead of printing a
nice warning with the faulty line number.

a string.

Suggested by Terry J. Reedy in #12298.

mapped to POSIX errno ENOTDIR (previously EINVAL).

Text adapted from the PEP.  Addition requested by Terry J. Reedy on
2011-02-23 on python-dev.