Copy risc compiler stuff to mom

Start to separate the layers. 
wip, just checkin in to see the following changes better

lib/parfait/block.rb

@@ -3,10 +3,10 @@ module Parfait
   # A Block is a callable object, much like a CallableMethod.
   # Surprisingly similar in fact, as the block is really only missing the name.
   #
-  # The difference lies mostly in the way they are compiled
+  # The difference lies mostly in the way they are compiled (scope and return)
   #
   # Also both have a list of blocks defined in their scope. But this is
-  # notimplemented for blocks yet
+  # not implemented for blocks yet
   #
   class Block < Callable