Merged Rails 2.1 compatibility branch.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1623 e93f8b46-1217-0410-a6f0-8f06a7374b81

db/migrate/072_add_enumerations_position.rb

@@ -1,7 +1,7 @@
 class AddEnumerationsPosition < ActiveRecord::Migration
   def self.up
     add_column(:enumerations, :position, :integer, :default => 1) unless Enumeration.column_names.include?('position')
-    Enumeration.find(:all).group_by(&:opt).each_value  do |enums|
+    Enumeration.find(:all).group_by(&:opt).each do |opt, enums|
       enums.each_with_index do |enum, i|
         # do not call model callbacks
         Enumeration.update_all "position = #{i+1}", {:id => enum.id}