patch-for-fail-back-without-fresh-backup (patch 1 of 1)

'git apply --summary --stat --apply --verbose' output was:

error: No changes

For original context, see http://www.postgresql.org/message-id/CAD21AoAXKm8V6wVOxMe+JT+_1dY3ttDkTkvRjXV5G2N8HmSOzg@mail.gmail.com
Adding travis.yml