Add tests for compression version.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add support for compression automatically based on version.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add the ability to upgrade to any given version.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add more database format tests.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>