heuristics → problem Relation

File in src/heuristics	Includes file in src/problem
BonInitHeuristic.hpp	CouenneProblem.hpp
BonNlpHeuristic.hpp	CouenneProblem.hpp
CouenneFPpool.hpp	CouenneProblem.hpp
CouenneIterativeRounding.hpp	CouenneProblem.hpp