run (Merb::BootLoader::LoadClasses)

    # File lib/merb-core/bootloader.rb, line 616
        def run
          # process name you see in ps output
          $0 = "merb#{" : " + Merb::Config[:name] if Merb::Config[:name]} : master"

          # Log the process configuration user defined signal 1 (SIGUSR1) is received.
          Merb.trap("USR1") do
            require "yaml"
            Merb.logger.fatal! "Configuration:\n#{Merb::Config.to_hash.merge(:pid => $$).to_yaml}\n\n"
          end

          if Merb::Config[:fork_for_class_load] && !Merb.testing?
            start_transaction
          else
            Merb.trap('INT') do
              Merb.logger.warn! "Reaping Workers"
              reap_workers
            end
          end

          # Load application file if it exists - for flat applications
          load_file Merb.dir_for(:application) if File.file?(Merb.dir_for(:application))

          # Load classes and their requirements
          Merb.load_paths.each do |component, path|
            next if path.last.blank? || component == :application || component == :router
            load_classes(path.first / path.last)
          end

          Merb::Controller.send :include, Merb::GlobalHelpers

          nil
        end