Removes the fat ruby-openid gem. Simply use 'gem install ruby-openid' to enable openid support.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2458 e93f8b46-1217-0410-a6f0-8f06a7374b81

vendor/plugins/open_id_authentication/init.rb

@@ -1,18 +1,16 @@
-if config.respond_to?(:gems)
-  config.gem 'ruby-openid', :lib => 'openid', :version => '>=2.1.4'
-else
-  begin
-    require 'openid'
-  rescue LoadError
-    begin
-      gem 'ruby-openid', '>=2.1.4'
-    rescue Gem::LoadError
-      puts "Install the ruby-openid gem to enable OpenID support"
-    end
-  end
-end
-
-config.to_prepare do
-  OpenID::Util.logger = Rails.logger
-  ActionController::Base.send :include, OpenIdAuthentication
-end
+begin
+  require 'openid'
+rescue LoadError
+  begin
+    gem 'ruby-openid', '>=2.1.4'
+  rescue Gem::LoadError
+    # no openid support
+  end
+end
+
+if Object.const_defined?(:OpenID)
+  config.to_prepare do
+    OpenID::Util.logger = Rails.logger
+    ActionController::Base.send :include, OpenIdAuthentication
+  end
+end