tests/test-doctest.py

localrepo: remove 'closed' argument to heads(...) function

- repository heads are not associated with the closed attribute, so
remove it making the code in line with the concept.
- Fix functions that were calling heads with the parameter.
- Adjust webcommands.branches to include the concept of inactive
as well as open and closed branches
- Fix code and docstrings in commands to make the correct use of
closed branches & branch heads clearer
- Improve grammar of 'hg heads' help text (2nd submission)

this does not alter the cli for hg branches, that work is
still to be done

# this is hack to make sure no escape characters are inserted into the output
import os;
if 'TERM' in os.environ:
    del os.environ['TERM']
import doctest

import mercurial.changelog
# test doctest from changelog

doctest.testmod(mercurial.changelog)

import mercurial.httprepo
doctest.testmod(mercurial.httprepo)

import mercurial.util
doctest.testmod(mercurial.util)

import hgext.convert.cvsps
doctest.testmod(hgext.convert.cvsps)