Correct bug with redundant g-value-unset. Some change to subtest.
drwxr-xr-x - gdk
-rw-r--r-- 2923 generating.lisp
drwxr-xr-x - glib
drwxr-xr-x - gtk
-rw-r--r-- 16740 subclass.lisp
-rw-r--r-- 11663 subtest.lisp