Application object should instantiate non-vendored plugins

Signed-off-by: Carl Lerche <carllerche@mac.com>

railties/lib/rails/application.rb

@@ -98,7 +98,7 @@ module Rails
     def plugins
       @plugins ||= begin
         plugin_names = config.plugins || [:all]
-        Plugin.plugins.select { |p| plugin_names.include?(:all) || plugin_names.include?(p.plugin_name) } +
+        Plugin.plugins.select { |p| plugin_names.include?(:all) || plugin_names.include?(p.plugin_name) }.map { |p| p.new } +
         Plugin::Vendored.all(config.plugins || [:all], config.paths.vendor.plugins)
       end
     end

railties/lib/rails/plugin.rb

@@ -27,12 +27,17 @@ module Rails
 
     def self.rake_tasks(&blk)
       @rake_tasks ||= []
-      @rake_tasks << blk
+      @rake_tasks << blk if blk
+      @rake_tasks
     end
 
-    def self.load_tasks
-      return unless @rake_tasks
-      @rake_tasks.each { |blk| blk.call }
+    def rake_tasks
+      self.class.rake_tasks
+    end
+
+    def load_tasks
+      return unless rake_tasks
+      rake_tasks.each { |blk| blk.call }
     end
 
     # Creates an initializer which includes all given modules to the given class.