start new elf testing category (and minors)

lib/phisol/compiler/call_site.rb

@@ -8,6 +8,7 @@ module Phisol
       if receiver
         me = process( receiver.to_a.first  )
       else
+        raise "revisit"
         if @method.class.name == :Integer
           me = Virtual::Self.new :int
         else

lib/phisol/compiler/field_def.rb

@@ -10,8 +10,8 @@ module Phisol
       if value
         value = process( value  )
       end
-
-      Virtual::Return.new( type , value )
+      # field_def is a statement, no return 
+      return nil
     end
   end
 end