fix interpreter to output symbols

which amazingly lets us get at classnames etc

test/mains/source/classname_Space_5.rb

@@ -0,0 +1,18 @@
+class Class
+  def name
+    @name
+  end
+end
+class Type
+  def name
+    @object_class.name
+  end
+end
+class Space
+  def type
+    @type
+  end
+  def main(arg)
+    type.name.putstring
+  end
+end