tests/test-gendoc-da.t

test: enable sparse-revlog for test-debugcommands.t

We are about to enable sparse-revlog globally. To help with reviewing the
tests change, we isolate them in individual changesets.

Differential Revision: https://phab.mercurial-scm.org/D5318

#require docutils gettext

  $ $TESTDIR/check-gendoc da
  checking for parse errors