Modernising CompositeData

src/Cxx/CompositeData/CMakeLists.txt

src/Cxx/CompositeData/CompositePolyDataMapper.cxx

src/Cxx/CompositeData/Generate2DAMRDataSetWithPulse.cxx

src/Cxx/CompositeData/Generate3DAMRDataSetWithPulse.cxx

src/Cxx/CompositeData/MultiBlockDataSet.cxx

src/Cxx/CompositeData/OverlappingAMR.cxx

src/Python/CompositeData/CompositePolyDataMapper.py

src/Python/CompositeData/MultiBlockDataSet.py

src/Python/CompositeData/OverlappingAMR.py

...aseline/Cxx/CompositeData/TestCompositePolyDataMapper.png

...ting/Baseline/Cxx/CompositeData/TestMultiBlockDataSet.png

...Testing/Baseline/Cxx/CompositeData/TestOverlappingAMR.png

...line/Python/CompositeData/TestCompositePolyDataMapper.png

...g/Baseline/Python/CompositeData/TestMultiBlockDataSet.png

...ting/Baseline/Python/CompositeData/TestOverlappingAMR.png