Merge branch 'ELASTIX-38-elastix-4.8-processobject-wrapper' into develop

CMake/elxModules.cmake

CMake/elxRequiredITKModules.cmake

CMakeLists.txt

Modules/Components/Elastix/ModuleElastix.cmake

Modules/Components/Elastix/include/elxElastixFilter.h

Modules/Components/Elastix/include/elxElastixFilter.hxx

Modules/Components/Elastix/include/elxTransformixFilter.h

Modules/Components/Elastix/include/elxTransformixFilter.hxx

Modules/Core/Common/include/elxMacro.h

Modules/Core/ParameterObject/include/elxParameterObject.h

SuperBuild/CMakeLists.txt

SuperBuild/ExternalElastix.cmake

Testing/Unit/CMakeLists.txt

Testing/Unit/Data/Input/4D.nii.gz.md5

Testing/Unit/Data/Input/BrainProtonDensitySlice.png.md5

...g/Unit/Data/Input/BrainProtonDensitySliceBorder20.png.md5

...it/Data/Input/BrainProtonDensitySliceBorder20Mask.png.md5

.../Unit/Data/Input/BrainProtonDensitySliceR10X13Y17.png.md5

...it/Data/Input/BrainProtonDensitySliceR10X13Y17S12.png.md5

...t/Data/Input/BrainProtonDensitySliceShifted13x17y.png.md5