point costs, initial guess depeding on normalized gridpoints

[jkoendev]

gridpoints = linspace(0,1,10)
x0 = linspace(50,1,10)
solver.ig.x.set(gridpoints, x0)

function pointcosts(ch, gridpoint, x)
  if gridpoint == 0.5
    sh.add(x'*x);
  end
end