Fixed bug when calculating distances to hull.  Turns out I was using the wrong
ring type.  Replaced:

typedef CORE::Expr NT;
typedef CGAL::Quotient<  NT>  RT;
by:
typedef CORE::Expr RT;

as suggested by Sebastian Loriot
http://cgal-discuss.949826.n4.nabble.com/NaN-calculating-intersection-point-of-plane-and-line-tt4658086.html

Expr already supports quotients so there is no need to wrap it in a CGAL::Quotient.

Added hull distance token 'hd' to sinfo.
Got rid of accidental gmon.out that snuck into the last commit.
Added back load structures block.