New routes implementation. Simpler, faster, easier to understand. The published API for config/routes.rb is unchanged, but nearly everything else is different, so expect breakage in plugins and libs that try to fiddle with routes.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4394 5ecf4fe2-1ee6-0310-87b1-e25e094e27de