preserve chained method punctuation

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4483 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/callbacks.rb

@@ -281,7 +281,7 @@ def before_validation_on_update() end
     # existing objects that have a record.
     def after_validation_on_update()  end
 
-    def valid_with_callbacks #:nodoc:
+    def valid_with_callbacks? #:nodoc:
       return false if callback(:before_validation) == false
       if new_record? then result = callback(:before_validation_on_create) else result = callback(:before_validation_on_update) end
       return false if result == false