Do Fuerte packages using Eigen need to depend on common_rosdeps?

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I'm a bit confused about this. The Eigen wiki page indicates that, for Fuerte, a package's manifest.xml needs to have

  <depend package="common_rosdeps" />
  <rosdep name="eigen" />

.. but the common_rosdeps wiki page says that this "stack/package" (which is it?) is "deprecated" and "no longer necessary".

I've tried commenting out both lines above and my code still seems to build happily so maybe this only matters in a rosinstall situation (which I tend not to do). But at any rate the information on the Eigen wiki page is still a bit confusing since it recommends depending on a deprecated package.