I built gnome-2.14 although it is hard masked. During emerge, i found something wrong. gnome-vfs requires gnome-mount which requires libgnome. By the way, libgnome also requires gnome-vfs. So, I made a new ebuild for gnome-vfs, in which I dropped gnome-mount. And then gnome-mount was included by gnome-volume-manager. It worked and I completed gnome-2.14 successfully.
This isn't correct as far as I can see, since we wan't gnome-vfs to use gnome mount and can't assure that people are using the metabuild/gnome-volume-manager. I'd say a better solution would to be add gnome-mount as a pdepend, since it isn't needed at compile time, and doesn't require gnome-vfs to be rebuild since gnome-vfs will auto-detect it. That way libgnome will be installed, then gnome-vfs, then gnome-mount.
gnome-mount has been removed from gnome-vfs ( and is in g-v-m for now ). A portage bug has been filed for the PDEPEND issue. Thanks!