tests/test-resolve

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

#!/bin/sh

# test that a commit clears the merge state.

hg init repo
cd repo

echo foo > file
hg commit -Am 'add file'

echo bar >> file
hg commit -Am 'append bar'

echo % create a second head
hg up -C 0
echo baz >> file
hg commit -Am 'append baz'

echo % failing merge
HGMERGE=internal:fail hg merge

echo resolved > file
hg resolve -m file
hg commit -m 'resolved'

echo % resolve -l, should be empty
hg resolve -l