Revert "Provide a unique point for running initializers."

This reverts commit c2e3ce8d1e.

Conflicts:

	railties/lib/rails/application/configuration.rb
	railties/lib/rails/application/finisher.rb
	railties/lib/rails/engine.rb

railties/lib/rails/application.rb

@@ -46,11 +46,11 @@ module Rails
   #   5)  Load config/environments/ENV.rb
   #   6)  Run config.before_initialize callbacks
   #   7)  Run Railtie#initializer defined by railties, engines and application.
-  #       One by one, each engine sets up its load paths, routes, locales and so on.
-  #   8)  Runs all registered config/initializers/*, executing the engines one first
-  #   9)  Build the middleware stack and run to_prepare callbacks
-  #   10) Run config.before_eager_load and eager_load if cache classes is true
-  #   11) Run config.after_initialize callbacks
+  #       One by one, each engine sets up its load paths, routes and runs its config/initializers/* files.
+  #   9)  Custom Railtie#initializers added by railties, engines and applications are executed
+  #   10) Build the middleware stack and run to_prepare callbacks
+  #   11) Run config.before_eager_load and eager_load if cache classes is true
+  #   12) Run config.after_initialize callbacks
   #
   class Application < Engine
     autoload :Bootstrap,      'rails/application/bootstrap'

railties/lib/rails/application/configuration.rb

@@ -8,7 +8,7 @@ module Rails
       attr_accessor :allow_concurrency, :asset_host, :asset_path, :assets,
                     :cache_classes, :cache_store, :consider_all_requests_local,
                     :dependency_loading, :filter_parameters, :force_ssl, :helpers_paths,
-                    :initializers_paths, :logger, :log_tags, :preload_frameworks,
+                    :logger, :log_tags, :preload_frameworks,
                     :railties_order, :relative_url_root, :reload_plugins, :secret_token,
                     :serve_static_assets, :ssl_options, :static_cache_control, :session_options,
                     :time_zone, :reload_classes_only_on_change, :whiny_nils
@@ -36,7 +36,6 @@ module Rails
         @generators                    = app_generators
         @cache_store                   = [ :file_store, "#{root}/tmp/cache/" ]
         @railties_order                = [:all]
-        @initializers_paths            = []
         @relative_url_root             = ENV["RAILS_RELATIVE_URL_ROOT"]
         @reload_classes_only_on_change = true
 

railties/lib/rails/application/finisher.rb

@@ -4,10 +4,6 @@ module Rails
       include Initializable
       $rails_rake_task = nil
 
-      initializer :load_config_initializers do
-        config.initializers_paths.each { |init| load(init) }
-      end
-
       initializer :add_generator_templates do
         config.generators.templates.unshift(*paths["lib/templates"].existent)
       end

railties/lib/rails/engine.rb

@@ -583,8 +583,10 @@ module Rails
       end
     end
 
-    initializer :append_config_initializers do |app|
-      app.config.initializers_paths.concat config.paths["config/initializers"].existent.sort
+    initializer :load_config_initializers do
+      config.paths["config/initializers"].existent.sort.each do |initializer|
+        load(initializer)
+      end
     end
 
     initializer :engines_blank_point do