[pygobject] use PyObject_SetAttrString, not PyDict_SetItemString when setting __gtype__

[John Palmieri <johnp src gnome org>]

commit 6d183d1fff55d54569ba3e1f90a10284df74fd40
Author: John (J5) Palmieri <johnp redhat com>
Date:   Fri Sep 3 12:04:16 2010 -0400

    use PyObject_SetAttrString, not PyDict_SetItemString when setting __gtype__
    
    * When registering a gtype wrapper we used to set tp_dict directly. This works
      in python 2 but python 3 seems to handle attributes in a slightly different
      way where the tp_dict and attr get out of sync.  By setting the attr
      directly we avoid this issue.
    * Note that there are many more places where we set __gtype__ using tp_dict
      however for objects which are not instantiated yet we have to set tp_dict
      directly.
    * Since this one change fixes a lot of failed tests, for now we ignore the
      other places where we set __gtype__.  If we run into more issues dealing
      with __gtype__ we can take a closer look later.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=627878
    
    https://bugzilla.gnome.org/show_bug.cgi?id=615872

 gobject/gobjectmodule.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gobject/gobjectmodule.c b/gobject/gobjectmodule.c
index 05a71d9..804d5b0 100644
--- a/gobject/gobjectmodule.c
+++ b/gobject/gobjectmodule.c
@@ -1192,7 +1192,7 @@ pyg_type_register(PyTypeObject *class, const char *type_name)
 
     /* set new value of __gtype__ on class */
     gtype = pyg_type_wrapper_new(instance_type);
-    PyDict_SetItemString(class->tp_dict, "__gtype__", gtype);
+    PyObject_SetAttrString(class, "__gtype__", gtype);
     Py_DECREF(gtype);
 
       /* propagate new constructor API compatility flag from parent to child type */