Remove deprecated methods NumericalMathFunction::getOutputHistory|getInputHistory for 1.6
Remove deprecated methods NumericalMathFunctionImplementation::getOutputHistory|getInputHistory for 1.6
Remove deprecated methods NumericalMathFunctionEvaluationImplementation::getOutputHistory|getInputHistory for 1.6
Remove deprecated methods Graph::getBitmap|getPostscript|getVectorial for 1.6
Remove deprecated methods Graph::draw(path, file, width, height, format)|getPath|getFileName for 1.6
Remove attribute Graph::fileName_ for 1.6
Make methods GraphImplementation::getBitmap|getPDF|getPostscript|getVectorial private for 1.6
Fix cpp kriging tests
Remove deprecated methods NumericalMathFunction(Implementation)::set{Evaluation|Gradient|Hessian}Implementation for 1.6
Remove deprecated methods NumericalSample::compute{Range,Median,Variance,Skewness,Kurtosis,CenteredMoment,RawMoment}PerComponent for 1.6
Remove deprecated method ProcessSample::setField(index, field) for 1.6
