Stocks were eerily calm early Tuesday morning — like the glassy darkness, if you will, of the North Atlantic that famous night.  It’s a bull market all right, but it’s scary just the same. And not just to us permabears.  U.S. markets routinely greet the opening bell with so much lightness, pluck and, in short bursts, animal ferocity, that one could almost overlook the fact that the rally’s institutional sponsors are — just like you and me — scared shitless by it.  With stocks making higher highs on most days, just as they did in the summer of 1929, even the optimists must be finding it increasingly difficult to believe we’re headed into such very good times as the broad averages would seem to be predicting.