> As the docs for zlib, gzip, bz2, lzma, zipfile and tarfile are in the
> archiving subsection, there’s already a link to the subsection index,
> so I just removed the “See also zlib, etc.” lines (except for the link
> from zlib to gzip).  I added a link from archiving.rst to shutil and
> more links and reST targets in shutil.

Looks good to me.

> The entry in Misc/ACKS, Doc/whatsnew/3.3.rst and the commit message
> should be enough.  Lately I’ve noticed some attributions in NEWS, but
> it’s usually not done (as redundant).

According to Doc/whatsnew/3.3.rst:

   "The maintainer will go through Misc/NEWS periodically and add
    changes; it's therefore more important to add your changes to
    Misc/NEWS than to this file."

> what about a mention in lzmamodule.c?

Done and committed.