Managing Views with ActiveRecord Migrations

I just added very simple view support to redhillonrails_core trunk. The changes give you the ability to create and drop views using create_view :name, "definition" and drop_view :name respectively as well as preserving the views in schema.rb.

WARNING: This is currently only supported for PostgreSQL. Creating views in MySQL will cause extra tables to be created in schema.rb! Probably not what you wanted.