Documentation for LegacyDB scaffold and STP (no CRUD)

Modify the ActionController::Scaffolding::ClassMethods.scaffold
command to generate different code. See the Scaffolding Extensions
plugin [1] for an example. The SVN server is back up now, and the
tar.gz should be up hopefully by this weekend.

[1] http://wiki.rubyonrails.com/rails/pages/Scaffolding+Extensions+Plugin