Export select_rows/1
Merge pull request #51 from opscode/of/oc_chef_object_fix

Export select_rows/1

We are exporting this for expediency to unblock customers in production. We should come back and refactor the code to support this in the future.
Modify chef_db:fetch_requestor to support no org.

fetch_requestor has been modified to directly fetch the user record in
absence of a valid org, without first attempting to fetch a client.
Consistently update pubkey_version, since this is now part of chef_user.