Currently the default install routine in the gnome2 eclass is to call einstall. This has been depreciated for quite some time in ebuilds, and replaced by make DESTDIR=${D} install. Most of the packages that use the gnome2 eclass end up having to set the USE_DESTDIR var in order to use the new method and avoid various sandbox and linking issues. The reason for not using that as default was to avoid failure with packages that don't support make DESTDIR. At this point, many more packages support the proper install method and we should default to using it and revert back to einstall for the few packages that may require it.
i added this in our svn overlay for testing.
in cvs.