merge 19364:19600 of rails_port into the openID branch

renamed migration 049_add_open_id_authentication_tables.rb to
050_add_open_id_authentication_tables.rb

db/migrate/049_improve_changeset_user_index.rb

@@ -0,0 +1,11 @@
+class ImproveChangesetUserIndex < ActiveRecord::Migration
+  def self.up
+    add_index :changesets, [:user_id, :id], :name => "changesets_user_id_id_idx"
+    remove_index :changesets, :name => "changesets_user_id_idx"
+  end
+
+  def self.down
+    add_index :changesets, [:user_id], :name => "changesets_user_id_idx"
+    remove_index :changesets, [:user_id, :id], :name => "changesets_user_id_id_idx"
+  end
+end