The proper GTK+ accessibility modules loading

Hi!

I have the question about the proper gail and atk-bridge modules loading
for GTK+ application to enable their accessibility. At first orca
startup it asks usual questions and make some changes to enable GNOME
accessibility. On next GNOME launch at-spi2-registryd is present in
processes list but orca speaks only its greeting. The command "export
GTK_MODULES=gail:atk-bridge" before GTK-based application startup
(including orca itself) lets me enable proper accessibility  navigation
inside of this application but I don't know how these modules must be
loaded automatically for every application inside of GNOME
environment. Please, give me any  recommendation how I can debug this
problem!

Currently I have on my system libgtk+-3.2.3, at-spi2-core-2.2.3 and
orca-3.2.2. I am using ALT Linux distribution. It is not based on Debian
or Ubuntu packages so the problem can be caused by incorrect GNOME
components packaging.

Thanks!
-- 
Michael Pozhidaev. Tomsk, Russia.
Russian info page: http://www.marigostra.ru/