Rails 3.1 compatibility.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9087 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/settings_controller_test.rb

@@ -61,7 +61,7 @@ class SettingsControllerTest < ActionController::TestCase
 
   def test_get_plugin_settings
     Setting.stubs(:plugin_foo).returns({'sample_setting' => 'Plugin setting value'})
-    ActionController::Base.view_paths.unshift(File.join(Rails.root, "test/fixtures/plugins"))
+    ActionController::Base.append_view_path(File.join(Rails.root, "test/fixtures/plugins"))
     Redmine::Plugin.register :foo do
       settings :partial => "foo_plugin/foo_plugin_settings"
     end