cpp when ACE_NLOGGING is
      enabled.<p>

    <li><EM><B>Higher layer interdependencies</EM></B> -- We haven't
    exhaustively tested all possible combinations of subsets.  It's possible
      that there are interdependencies between some layers that
      we haven't yet identified and removed.<p>

    <li><EM><B>Remove reliance on multiple inheritance</EM></B> -- Multiple
        inheriance is only used in a few
      places in ACE.  This
      isn't really a subsetting problem, but is necessary to
    