Refactored code

activerecord/lib/active_record/railties/databases.rake

@@ -542,7 +542,7 @@ namespace :railties do
     # desc "Copies missing migrations from Railties (e.g. engines). You can specify Railties to use with FROM=railtie1,railtie2"
     task :migrations => :'db:load_config' do
       to_load = ENV['FROM'].blank? ? :all : ENV['FROM'].split(",").map {|n| n.strip }
-      railties = ActiveSupport::OrderedHash.new
+      railties = {}
       Rails.application.railties.all do |railtie|
         next unless to_load == :all || to_load.include?(railtie.railtie_name)
 

activerecord/lib/active_record/relation/calculations.rb

@@ -286,7 +286,7 @@ def execute_grouped_calculation(operation, column_name, distinct) #:nodoc:
         key_records = Hash[key_records.map { |r| [r.id, r] }]
       end
 
-      ActiveSupport::OrderedHash[calculated_data.map do |row|
+      Hash[calculated_data.map do |row|
         key   = group_columns.map { |aliaz, column|
           type_cast_calculated_value(row[aliaz], column)
         }

activerecord/test/cases/nested_attributes_test.rb

@@ -663,7 +663,7 @@ def test_should_ignore_new_associated_records_if_a_reject_if_proc_returns_false
   end
 
   def test_should_sort_the_hash_by_the_keys_before_building_new_associated_models
-    attributes = ActiveSupport::OrderedHash.new
+    attributes = {}
     attributes['123726353'] = { :name => 'Grace OMalley' }
     attributes['2'] = { :name => 'Privateers Greed' } # 2 is lower then 123726353
     @pirate.send(association_setter, attributes)