DOC: fix parameter names in StereoRectificationGridGenerator, BinaryMorphologicalOperation, GrayScaleMorphologicalOperation, LocalStatisticExtraction

ENH: Majority Voting: multiple majority labels are set either to UnDefinedValue or to their original value (by default)

ENH: remove the GenerateInputRequestedRegion method from otbImageFileReader because all the streaming is managed now in UpdateOutputData

ENH: LabelImageRegionPruning and Merging Filters don't support streaming so we add an explicit method to deactivate the streaming