Fix build with gnome-desktop>=3.7.90

The gnome_desktop_prepend_terminal_to_vector() function is removed from gnome-destop 3.7.90:
http://git.gnome.org/browse/gnome-desktop/commit/?id=9bab2144b7c8ace0c057720be3c48fb24a80a19d

There is a patch applied for nautilus, that replaces the function with the G_APP_INFO_CREATE_NEEDS_TERMINAL flag:
http://git.gnome.org/browse/nautilus/commit/?id=447d2ad6944afd94434a774b28f8c6e8274955fe

The same patch can be applied to nemo also.