Extracted auto_link and auto_mailto to a module.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9063 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/helpers/application_helper_test.rb

@@ -940,7 +940,7 @@ RAW
   def test_default_formatter
     with_settings :text_formatting => 'unknown' do
       text = 'a *link*: http://www.example.net/'
-      assert_equal '<p>a *link*: <a href="http://www.example.net/">http://www.example.net/</a></p>', textilizable(text)
+      assert_equal '<p>a *link*: <a class="external" href="http://www.example.net/">http://www.example.net/</a></p>', textilizable(text)
     end
   end