zeroconf: small fixes in docstring
Use reST role for consistency, import small part of Debian's
proposed_upstream__correct-zeroconf-doc patch from
http://svn.debian.org/viewsvn/python-apps/packages/mercurial/trunk/debian/patches/
hgweb.wsgi: add a URL to the corresponding wiki documentation
Imported for_upstream__add_doc_url_in_example_files.patch from
Debian's patch queue:
http://svn.debian.org/viewsvn/python-apps/packages/mercurial/trunk/debian/patches/