D350: demandimport: test whether to enable or not in hg script

[yuja (Yuya Nishihara)]

yuja added a comment.


  > `sys.modules['hgdemandimport']` being set? Maybe I should remove it from commit message.
  
  So there's no point to duplicate the HGDEMANDIMPORT check?

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D350

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