moved slots to own directory

lib/virtual/slots/message_slot.rb

@@ -0,0 +1,27 @@
+module Virtual
+  # The message that is being processed has a layout as per the constant above
+  class MessageSlot < Slot
+    def initialize index , type = Mystery , value = nil
+      super(index ,type , value )
+    end
+  end
+
+  class Return < MessageSlot
+    def initialize type = Mystery, value = nil
+      super( MESSAGE_RETURN_VALUE , type , value  )
+    end
+  end
+
+  class Self < MessageSlot
+    def initialize type = Mystery, value = nil
+      super( MESSAGE_SELF , type , value  )
+    end
+  end
+
+  # Name of the current message
+  class Name < MessageSlot
+    def initialize type = Mystery, value = nil
+      super( MESSAGE_NAME , type , value  )
+    end
+  end
+end