Added acts instead of mixins

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@240 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/install.rb

@@ -42,8 +42,8 @@
  active_record/fixtures.rb
  active_record/observer.rb
  active_record/reflection.rb
- active_record/mixins/list.rb
- active_record/mixins/touch.rb
+ active_record/acts/list.rb
+ active_record/acts/tree.rb
  active_record/support/class_attribute_accessors.rb
  active_record/support/class_inheritable_attributes.rb
  active_record/support/clean_logger.rb