Fixing build failures

Build failed with an error "invalid multibyte char (US-ASCII)" in these
files. Apparently, some UTF-8 char disguised as whitespace causes this.

Thanks @rafaelfranca

railties/lib/rails/generators/erb.rb

 require 'rails/generators/named_base'
 
-module Erb # :nodoc:
-  module Generators # :nodoc:
+module Erb # :nodoc:
+  module Generators # :nodoc:
     class Base < Rails::Generators::NamedBase #:nodoc:
       protected
 

railties/lib/rails/generators/erb/controller/controller_generator.rb

 require 'rails/generators/erb'
 
-module Erb # :nodoc:
-  module Generators # :nodoc:
-    class ControllerGenerator < Base # :nodoc:
+module Erb # :nodoc:
+  module Generators # :nodoc:
+    class ControllerGenerator < Base # :nodoc:
       argument :actions, :type => :array, :default => [], :banner => "action action"
 
       def copy_view_files

railties/lib/rails/generators/erb/mailer/mailer_generator.rb

 require 'rails/generators/erb/controller/controller_generator'
 
-module Erb # :nodoc:
-  module Generators # :nodoc:
-    class MailerGenerator < ControllerGenerator # :nodoc:
+module Erb # :nodoc:
+  module Generators # :nodoc:
+    class MailerGenerator < ControllerGenerator # :nodoc:
       protected
 
       def format

railties/lib/rails/generators/erb/scaffold/scaffold_generator.rb

 require 'rails/generators/erb'
 require 'rails/generators/resource_helpers'
 
-module Erb # :nodoc:
-  module Generators # :nodoc:
-    class ScaffoldGenerator < Base # :nodoc:
+module Erb # :nodoc:
+  module Generators # :nodoc:
+    class ScaffoldGenerator < Base # :nodoc:
       include Rails::Generators::ResourceHelpers
 
       argument :attributes, :type => :array, :default => [], :banner => "field:type field:type"

railties/lib/rails/generators/js/assets/assets_generator.rb

 require "rails/generators/named_base"
 
 module Js # :nodoc:
-  module Generators # :nodoc:
-    class AssetsGenerator < Rails::Generators::NamedBase # :nodoc:
+  module Generators # :nodoc:
+    class AssetsGenerator < Rails::Generators::NamedBase # :nodoc:
       source_root File.expand_path("../templates", __FILE__)
 
       def copy_javascript

railties/lib/rails/generators/rails/helper/helper_generator.rb

 module Rails
   module Generators
-    class HelperGenerator < NamedBase # :nodoc:
+    class HelperGenerator < NamedBase # :nodoc:
       check_class_collision :suffix => "Helper"
 
       def create_helper_files