[PATCH] transaction: enable hardlink backups for non-windows systems

[Yuya Nishihara]

On Wed, 1 Mar 2017 17:55:25 -0800, Jun Wu wrote:
> According to https://bz.mercurial-scm.org/show_bug.cgi?id=4546:
> 
>   Testing with mercurial 3.2 and 3.3 to a Linux samba server worked without
>   issue in the few tests I've done.  This suggests the most likely cause is
>   an NTFS/Windows based file server?
> 
> So I think at least we can have a whitelist (instead of a blacklist) that
> allows Linux to use real hardlinks. Just ignore OS X or Windows for now.

She said a Linux samba server had no problem, not a Linux client with Windows
server.