Don't allow Reloadable to be included into Modules

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3527 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

 *SVN*
 
+* Don't allow Reloadable to be included into Modules.
+
 * Remove LoadingModule. [Nicholas Seckar]
 
 * Add documentation for Reloadable::OnlySubclasses. [Nicholas Seckar]

activesupport/lib/active_support/reloadable.rb

@@ -3,7 +3,9 @@
 module Reloadable
   class << self
     def included(base) #nodoc:
-      if base.is_a?(Class) && ! base.respond_to?(:reloadable?)
+      raise TypeError, "Only Classes can be Reloadable!" unless base.is_a? Class
+      
+      unless base.respond_to?(:reloadable?)
         class << base
           define_method(:reloadable?) { true }
         end