revlog: define censored flag for revlogng index This flag bit will be used to cheaply signal censorship presence to upper layers (exchange, verify). It indicates that censorship metadata is present but does not attest to the verifiability of that metadata. For the censorship design, see: http://mercurial.selenic.com/wiki/CensorPlan

localrepo: remove all internal uses of localrepo.wopener It has been replaced with localrepo.wvfs.