Merge branch 'T22613-Save_LazyFieldByFile'

1. Conflicts:
2. Applications/Matcher/source/matchRHelper.cpp
3. Code/Algorithms/Plastimatch/test/mapDummyPlastimatch.cpp
4. Code/Core/include/mapDimensionlessRegistrationKernelBase.h
5. Code/Core/include/mapNullRegistrationKernel.h
6. Code/Core/include/mapNullRegistrationKernel.tpp
7. Code/Core/include/mapRegistrationKernel.h
8. Code/Core/include/mapRegistrationKernel.tpp
9. Code/Core/include/mapRegistrationKernelBase.h
10. Code/Core/test/mapRegistrationTest.cpp
11. Code/Core/test/mapTestKernelBase.h
12. Code/IO/files.cmake
13. Code/IO/include/mapImageReader.tpp
14. Code/IO/include/mapKernelWriterLoadPolicy.h
15. Code/IO/include/mapKernelWriterLoadPolicy.tpp
16. Code/IO/test/mapExpandingFieldKernelWriterTest.cpp
17. Code/IO/test/mapFieldKernelLoaderTest.cpp
18. Code/IO/test/mapIOTests.cpp
19. Code/IO/test/mapLazyFileFieldKernelLoaderTest.cpp
20. Code/IO/test/mapMatrixModelBasedKernelWriterTest.cpp
21. Code/IO/test/mapRegistrationFileWriterTest.cpp
22. Code/IO/tests.cmake
23. Testing/Data/Core/registrationFileWriterReader_Ref1.mapr
24. Testing/Data/Core/registrationFileWriterReader_Ref2.mapr
25. Testing/Data/Core/registrationFileWriterReader_Ref3.mapr
26. Testing/Data/Core/registrationFileWriterReader_Ref4.mapr
27. Testing/Data/Core/registrationFileWriterReader_Ref4_legacy.mapr
28. Testing/Data/Core/registrationFileWriterReader_Ref5.mapr
29. Testing/Data/Core/registrationFileWriterReader_Ref6.mapr
30. Testing/Data/Core/savedReg1.mapr
31. Testing/Data/Core/savedReg2.mapr
32. Testing/Data/Core/savedReg3.mapr

Signed-off-by: Ralf Floca <r.floca@dkfz-heidelberg.de>