transplant: add --edit option

rebase: add --edit switch

httpclient: update to 07d8c356f4d1 of py-nonblocking-http This addresses a defect when the server closes the socket before finishing a response (if it crashes, for example) first spotted in Issue2951.

wireproto: do not call pushkey module directly (issue3041) Call the repos pushkey/listkeys member function instead. So the pushkey-hooks are triggered.

largefiles: add beginnings of test (covers commit, remove, move, copy, and archive)

setup: add largefiles to list of packages

rebase: move updatedirstate into cmdutil so it can be shared

subrepo: add git to the help topic

branch: fix formatting of help note

backout: deprecate/hide support for backing out merges This has never worked usefully: - it can't undo a completely unwanted merge, as it leaves the merge in the DAG - it can't undo a faulty merge as that means doing a merge correctly, not simply reverting to one or the other parent Both of these kinds of merge also require coordinated action among developers to avoid the bad merge continuing to affect future merges, so we should stop pretending that backout is of any help here. As backing out a merge now requires a hidden option, it can't be done by accident, but will continue to 'work' for anyone who's already dependent on --parent for some unknown reason.