main/gtk+2.0,3.0: wrong immodules cache population path in post-upgrade
Post-upgrade scripts in these aports populate immodules cache to sysconfdir, but the path changed to libdir 8 years ago.
In GTK 3 the right path is /usr/lib/gtk-3.0/3.0.0/immodules.cache, for example.
I can confirm that immodules work only after populating the cache to the right path under libdir.
gtk-query-immodules-2.0/3.0 also have a --update-cache flag which will write to the right path. We should use it instead of using redirection.