revlog: add flags argument to _addrevision, update callers use default flags For revlog index flags to be useful to other parts of Mercurial, they need to be settable when writing revisions. The current use case for revlog index flags is the censorship feature: http://mercurial.selenic.com/wiki/CensorPlan While the censor flag could be inferred in _addrevision by interrogating the text/delta being added, that would bury the censorship logic and inappropriately couple it to all revision creation.