ENH: Speedup of HaralickTextureExtraction. Only Textures from simple texture set

No more use of ITK filters itkScalarImageToCooccurrenceMatrixFilter and itkHistogramToTexturesFilter.
Integration of patch for pixelVarianceSquared from ITKPendingPatches/itkHistogramToTexturesFilter.hxx
Neigbhorhood window size updated for given Radius value and not creating MaskImage
Change InputImageMaximum to 255 in Testing Code and also updated
the default value of m_InputImageMaximum in ScalarImageToTexturesFilter
Changed tolerance value to 0.00001 from no tolerance