D4416: copies: improve logic of deciding copytracing on based of config options

[yuja (Yuya Nishihara)]

yuja added a comment.


  check-config complains about bool vs str. parsebool() might help.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D4416

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