GenEC works only i 2D on sphere and rosenbrock

  src/model/GpModel.m           -- update in debug output on the screen
  test/evocontrolTest.m         -- test update for Rosenbrock 2D
Minor modification to generation EC

  src/model/Model.m        -- checking of flat fitness in shiftReevaluate()
  src/model/RfModel.m      -- bug-fixes
  src/surrogateManager.m   -- minor modifications to generation EC
  test/evocontrolTest.m    -- minor modifications