Removing why's metaid object stuff and switching to new standards tha…

…t are in 1.9.2 and active support 3.

UPGRADES

@@ -3,4 +3,5 @@
   * @new instance variable renamed to @_new (you shouldn't be using this anyway)
   * Removed undefining of object_id in proxies and equal? method in Equality. This means checking equal? for a proxy and a regular document will always be false even if proxy refers to same document. Check Proxy#target instead. (ie: root.equal?(item.root.target))
   * find no longer takes options as a last argument. It only works with id, multiple ids, array of ids.
-  * MongoMapper::MongoMapperError is now MongoMapper::Error
+  * MongoMapper::MongoMapperError is now MongoMapper::Error
+  * metaclass, meta_eval, meta_def, class_def removed as they were not being used

lib/mongo_mapper/extensions/kernel.rb

@@ -0,0 +1,8 @@
+module Kernel
+  # Returns the object's singleton class.
+  def singleton_class
+    class << self
+      self
+    end
+  end unless respond_to?(:singleton_class) # exists in 1.9.2
+end

lib/mongo_mapper/extensions/object.rb

@@ -16,25 +16,6 @@ module InstanceMethods
         def to_mongo
           self.class.to_mongo(self)
         end
-
-        # The hidden singleton lurks behind everyone
-        def metaclass
-          class << self; self end
-        end
-
-        def meta_eval(&blk)
-          metaclass.instance_eval(&blk)
-        end
-
-        # Adds methods to a metaclass
-        def meta_def(name, &blk)
-          meta_eval { define_method(name, &blk) }
-        end
-
-        # Defines an instance method within a class
-        def class_def(name, &blk)
-          class_eval { define_method(name, &blk) }
-        end
       end
     end
   end