status: add -c (clean) and -A (all files) options
also add new localrepo.status what is more uniform than localrepo.changes.
localrepo.changes is deprecated and will go away soon.
#!/bin/sh
hg init a
cd a
hg init b
echo x > b/x
echo '# should print nothing'
hg st
echo '# should print ? b/x'
hg st b/x
hg add b/x
echo '# should print A b/x'
hg st
echo '# should forget b/x'
hg revert
echo '# should print nothing'
hg st b