BUG: OGRDataSourceWrapper::GetProjectionRef() does not actually return the projection ref, this property is owned by each layer

DOC: set application example files located in OTB-Data/Examples (for Segmentation, Rasterization, Radiometry and RadiometricIndices)

SetName needs access to DocExample structure, which is created during initialization

ENH Rasterization application input modification : output projection ref is set by SRID or by using a reference image.