Access the application instance configuration
Access the application instance configuration

This was necessary because

  Rails::Application::Configuration.new

stopped working in latest rails master. I'm not
sure wether this is the proper fix, or just a
workaround. Time will tell.

Anyhow, for now, this fixes the previously broken
rake tasks that relied on the :load_config task.
jhuckabee/rails3_datamapper,datamapper/dm-rails