subrepos: process subrepos in sorted order Add sorted() in places found by testing with PYTHONHASHSEED=random and code inspection. An alternative to sprinkling sorted() all over would be to change substate to a custom dict with sorted iterators...

bookmarks: process pulled remote bookmarks in sorted order

copies: report found copies sorted

discovery: process heads in sorted order

merge: process files in sorted order

commandserver: report capabilities sorted

bisect: store state sorted

localrepo: store branchheads sorted

localrepo: store requirements sorted

copies: make the loss in _backwardcopies more stable A couple of tests shows slightly more correct output. That is pure coincidence.