Hardlinks and Docker

[Jun Wu]

Excerpts from Gregory Szorc's message of 2017-03-29 18:15:43 -0700:
> > So the direct fix is to stat the directory instead of the file. I will send
> > it soon.
> 
> Thank you for looking into this complicated issue! I'm glad I don't have
> to review your code because this is all over my head at this point ;)

The fix to this issue is easy:
https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-March/095877.html