Renaming ForSegments to ForElements and ForAllSegments to ForEachElement.

src/TNL/Algorithms/Segments/BiEllpack.h

src/TNL/Algorithms/Segments/BiEllpack.hpp

src/TNL/Algorithms/Segments/BiEllpackView.h

src/TNL/Algorithms/Segments/BiEllpackView.hpp

src/TNL/Algorithms/Segments/CSR.h

src/TNL/Algorithms/Segments/CSR.hpp

src/TNL/Algorithms/Segments/CSRView.h

src/TNL/Algorithms/Segments/CSRView.hpp

src/TNL/Algorithms/Segments/ChunkedEllpack.h

src/TNL/Algorithms/Segments/ChunkedEllpack.hpp

src/TNL/Algorithms/Segments/ChunkedEllpackView.h

src/TNL/Algorithms/Segments/ChunkedEllpackView.hpp

src/TNL/Algorithms/Segments/Ellpack.h

src/TNL/Algorithms/Segments/Ellpack.hpp

src/TNL/Algorithms/Segments/EllpackView.h

src/TNL/Algorithms/Segments/EllpackView.hpp

src/TNL/Algorithms/Segments/SlicedEllpack.h

src/TNL/Algorithms/Segments/SlicedEllpack.hpp

src/TNL/Algorithms/Segments/SlicedEllpackView.h

src/TNL/Algorithms/Segments/SlicedEllpackView.hpp