err message: you need to update to new API when compling gnome-sessions

[William Davis]

an error message during complie of gnome-sessions said :
Warning: constructor for GnomeCanvasBPath [or GnomeCanvasXxxx for  
several diferent things] refer to live.gnome.org/ 
PyGTK_2fWhatsNew28#update-constructors
which however was a 404 error.

I finally found the reference here: http://forums.gentoo.org/ 
viewtopic.php?t=578120

pls advise