Its seems that gnome-base/gnome-vfs-2.16.0-r1 requires dev-libs/dbus-glib, but it wasn't depending on it so it refused to compile when wanted libs wasn't found. Only useflag "ssl". possible solution: add dependency to dev-libs/dbus-glib to the ebuild. workaround: unmask dbus-glib and dbus-core then install dbus-glib separately.
dbus is in the dependancies but only if hal is specified as a use. Was able to workaround and get this installed by "emerge dbus" and that satified the dependancies of gnome-vfs-2.16.0.
I've made the dbus dep non-optional. Thanks.