An object of class cutList holds constraints that can be extracted and
used as for objects of class linProb-class. An object of class
cutList consists of a constraint matrix (slot con), a vector
of directions (slot direction) and a vector specifying the right hand
sides of the constraints (slot rhs).
con:an object of class simpleTriplet-class specifying the constraint matrix of the problem
direction:a character vector holding the directions of the constraints, allowed values are:
==: equal
<: less
>: greater
<=: less or equal
>=: greater or equal
rhs:numeric vector holding right hand side values of the constraints
objects of class cutList are dynamically generated (and removed) during the cut and branch algorithm when solving the secondary cell suppression problem