convert: use manifest.diff() instead of ctx.status() mercurial_source.getchanges() seems to care about files whose nodeid has changed even if their contents has not (i.e. it has been reverted/backed out). The method uses ctx1.status(ctx2) to find differencing files. However, that method is currently broken and reports reverted changes as modified. In order to fix that method, we first need to rewrite getchanges() using manifest.diff(), which does report reverted files as modified (because it's about differences in the manifest, so about nodeids).