Add diagnostic output for test failure.

Here's the failure:

  http://www.cpantesters.org/cpan/report/98a5c740-0fde-11e3-99f1-949a25e5b994

It is not a failure I have replicated, so let's see if this helps diagnose it
in the future.
Try to fix SQLite failures.

Example: http://www.cpantesters.org/cpan/report/8edaddcc-1033-11e3-9ae7-f8825735fcd0