test-resolve: add more tests for in conflict-free states We already have a test for 'hg resolve -m' when there is no merge in progress. Add one for 'hg resolve --all' as well. Also add tests for both --all and -m when there is a merge without conflicts in progress. They should both be successful, just as if there had been conflicts that had been marked resolved. However, that is currently broken, so mark the tests broken for now. The behavior will be fixed in a later patch.