update to use parfait not virtual

more ripples
reverting to integers (not virtual::integer)

lib/arm/instruction.rb

@@ -8,6 +8,8 @@ module Arm
   # - Move
   # - Call  class Instruction
   class Instruction
+    include Positioned
+
     def initialize  options
       @attributes = options
     end
@@ -15,28 +17,18 @@ module Arm
     def opcode
       @attributes[:opcode]
     end
-    def position
-      raise "position accessed but not set at #{length} for #{self.inspect}" if @position == nil
-      @position
-    end
-    def set_position pos
-      # resetting of position used to be error, but since relink and dynamic instruction size it is ok. in measures
-      if @position != nil and ((@position - pos).abs > 32)
-        raise "position set again #{pos}!=#{@position} for #{self}" 
-      end
-      @position = pos
-    end
+
 
     # this is giving read access to the attributes hash via .attibute syntax
     # so for an instruction pop you can write pop.opcode to get the :opcode attribute
 
     # TODDO: review (don't remember what the "set_" stuff was for)
-    def method_missing name , *args , &block 
+    def method_missing name , *args , &block
       return super unless (args.length <= 1) or block_given?
       set , attribute = name.to_s.split("set_")
       if set == ""
         @attributes[attribute.to_sym] = args[0] || 1
-        return self 
+        return self
       else
         return super
       end