osheroff/active_record_shards — pull request #15 by grosser (2012-11-14 16:17:21+00:00)
Title: do not rails when dropping non-existent database in rails 3+

rails is doing the same up to 3.2 https://github.com/rails/rails/blob/3-2-stable/activerecord/lib/active_record/railties/databases.rake#L151