move parfait into register

register layer uses parfait models to generate object space
so parfait  should be part of register (not above it)

lib/register/parfait/symbol_adapter.rb

@@ -0,0 +1,43 @@
+
+class Symbol
+  include Positioned
+  include Padding
+
+  def has_layout?
+    true
+  end
+  def get_layout
+    l = Register.machine.space.classes[:Word].object_layout
+    #puts "LL #{l.class}"
+    l
+  end
+  def padded_length
+    padded to_s.length + 4
+  end
+  # not the prettiest addition to the game, but it wasn't me who decided symbols are frozen in 2.x
+  def cache_positions
+    unless defined?(@@symbol_positions)
+      @@symbol_positions = {}
+    end
+    @@symbol_positions
+  end
+  def position
+    pos = cache_positions[self]
+    if pos == nil
+      str = "position accessed but not set, "
+      str += "Machine has object=#{Register.machine.objects.has_key?(self.object_id)} "
+      raise str + " for Symbol:#{self}"
+    end
+    pos
+  end
+  def position= pos
+    # resetting of position used to be error, but since relink and dynamic instruction size it is ok.
+    # in measures (of 32)
+    old = cache_positions[self]
+    if old != nil and ((old - pos).abs > 20000)
+      raise "position set again #{pos}!=#{old} for #{self}"
+    end
+    cache_positions[self] = pos
+  end
+
+end