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

test/cases/root/root_module_class.tst

@@ -5,8 +5,12 @@ module FooBo
 end
 
 -- -- --
-s(:list,  [s(:module,  "FooBo",  [s(:class,  "Bar",  nil,  [s(:assign, 
-  s(:name,  "a"), 
-  s(:operator,  "+", 
-    s(:int,  5), 
-    s(:name,  "foo")))])])])
+s(:expressions, 
+  s(:module,  :FooBo, 
+    s(:class,  :Bar, 
+      s(:derives,  nil), 
+      s(:assign, 
+        s(:name,  :a), 
+        s(:operator,  "+", 
+          s(:int,  5), 
+          s(:name,  :foo))))))