Add the following methods in LaplaceCurvilinear: getBoundaryOperator, getBoundaryQuadrature, getBoundaryBorrowing. Remove get_boundary_ops. Make interface and boundary_condition methods use the new methods.

function benchmark(func, N)
    default_arg('N',100);

    tic
    profile on

    for i = 1:N
        func();
    end

    profile viewer
end