tests/test-dirstate-backup.t

inno: remove cacerts.pem from documentation

The inno distribution no longer includes cacert.pem as of
ca1ad8ef38be22 (April 2015). The docs were never updated.

Differential Revision: https://phab.mercurial-scm.org/D6061

Set up

  $ hg init repo
  $ cd repo

Try to import an empty patch

  $ hg import --no-commit - <<EOF
  > EOF
  applying patch from stdin
  abort: stdin: no diffs found
  [255]

No dirstate backups are left behind

  $ ls .hg/dirstate* | sort
  .hg/dirstate