debugdirstate: deprecate --nodates in favor of --no-dates We have supported 'no-' prefixes for boolean flag for a few years now, so I was expecting it to be --no-dates. I noticed that we have --nodates options for a few more commands (e.g. `hg diff`), but I'll leave that for another day. Differential Revision: https://phab.mercurial-scm.org/D4693