tests/test-gendoc-zh_CN.t

overlayworkingctx: add _auditconflicts to write()

Alas, part of Mercurial's conflict detection (for file<->folder conflicts,
for example) depends on the filesystem. We don't have the filesystem with IMM,
so we have to run these checks ourselves.

Differential Revision: https://phab.mercurial-scm.org/D1241

#require docutils gettext

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