rename the XX_slot classes to SlottedXX

move to slotted and slots (wip)

test/slot_machine/instruction/test_argument_transfer.rb

@@ -3,7 +3,7 @@ require_relative "helper"
 module SlotMachine
   class TestArgumentTransfer < SlotMachineInstructionTest
     def instruction
-      receiver = MessageSlot.new( [:receiver])
+      receiver = SlottedMessage.new( [:receiver])
       arg = SlotLoad.new("test", [:message, :caller] , [:message,:type] )
       ArgumentTransfer.new("" , receiver ,[arg])
     end

test/slot_machine/instruction/test_not_same_check.rb

@@ -3,7 +3,7 @@ require_relative "helper"
 module SlotMachine
   class TestNotSameCheck < SlotMachineInstructionTest
     def instruction
-      target = Slot.for(:message , :caller)
+      target = Slotted.for(:message , :caller)
       NotSameCheck.new(target , target , Label.new("ok" , "target"))
     end
     def test_len

test/slot_machine/instruction/test_truth_check.rb

@@ -3,7 +3,7 @@ require_relative "helper"
 module SlotMachine
   class TestSameCheck < SlotMachineInstructionTest
     def instruction
-      target = MessageSlot.new( :caller)
+      target = SlottedMessage.new( :caller)
       TruthCheck.new(target , Label.new("ok" , "target"))
     end
     def test_len