fix all the cases, much white noise, array to list, string to sym stuff

test/cases/class_def/class_method.tst

@@ -1,7 +1,14 @@
 class Foo < Object
-  int Foo.test()
+  int test()
     43
   end
 end
 -- -- --
-{:expression_list=>[{:module_name=>"Foo", :derived_name=>s(:module,  "Object"), :class_expressions=>[{:type=>"int", :receiver=>s(:module,  "Foo"), :function_name=>s(:name,  "test"), :parameter_list=>[], :expressions=>[s(:int,  43)], :end=>"end"}], :end=>"end"}]}
+s(:expressions,
+  s(:class,  :Foo,
+    s(:derives,  :Object),
+    s(:function,  :int,
+      s(:name,  :test),
+      s(:parameters),
+      s(:expressions,
+        s(:int,  43)))))