D6163: copies: extract function for deciding whether to use changeset-centric algos

[pulkit (Pulkit Goyal)]

pulkit added inline comments.

INLINE COMMENTS

> copies.py:163
>  
> +def usechangesetcentricalgo(repo):
> +    """Checks if we should use changeset-centric copy algorithms"""

maybe we need to have https://phab.mercurial-scm.org/D2010, but we can drop `algo` (and maybe `use` also) from the name I guess.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D6163

To: martinvonz, #hg-reviewers
Cc: pulkit, mercurial-devel