[PATCH 01 of 10 layering] dirstateguard: move to new module so I can break some layering violations

[Yuya Nishihara]

On Wed, 23 Nov 2016 20:42:26 -0500, timeless wrote:
> Yuya Nishihara wrote:
> > Is copy-and-remove a preferred way for this kind of refactoring? I have
> > an unsent patch that splits revset.py, so I want to know which is better.
> 
> Augie Fackler wrote:
> > I'd prefer it slightly, because it makes the blame history a little bit more intact in the long run.
> 
> Me too.

Thanks, I'll update my local patches to do that.