D6730: config: handle default values of type list

[av6 (Anton Shestakov)]

This revision now requires changes to proceed.
av6 added a comment.
av6 requested changes to this revision.


  The changes in tests that this patch causes are actually already present in the D6709 <https://phab.mercurial-scm.org/D6709>, so let's fold this patch into it as well.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D6730/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D6730

To: navaneeth.suresh, #hg-reviewers, av6
Cc: av6, mercurial-devel