I updated to GTK+-2.9.3 and Cairo to 1.1.8 since GTK+-2.9.2 had a serious icon cache crasher bug. Grab them from http://people.redhat.com/johnp/files/gnome-2.15.3-modules/.
I also uploaded my sample-tarball.jhbuild config file. Detailed information about smoketesting is on the gnome wiki Smoketesting page. The jhbuild commands I use to build these modules looks like this:
jhbuild -m bootstrap build meta-bootstrap
jhbuild -m gnome-2.15.3.modules build meta-gnome-desktop
Everything looks good from my end so if nobody comes up with any blockers I am going to release tonight with this module set.[read this post in: ar de es fr it ja ko pt ru zh-CN ]