Rename all C++ classes/files *GivensFGFT* to EigTJ.

misc/test/CMakeLists.txt

misc/test/src/C++/EigTJ.cpp.in

misc/test/src/C++/EigTJComplex.cpp.in

misc/test/src/C++/EigTJComplexSparse.cpp.in

misc/test/src/C++/EigTJParallel.cpp.in

misc/test/src/C++/EigTJParallelComplex.cpp.in

misc/test/src/C++/EigTJParallelSparse.cpp.in

misc/test/src/C++/EigTJSparse.cpp.in

misc/test/src/C++/EigTJUtil.h

misc/test/src/C++/EigTJUtil.hpp

misc/test/src/C++/test_svdtj.cpp.in

misc/test/src/Matlab/FaustFactoryTest.m

misc/test/src/Matlab/test_GivensDiag.m

misc/test/src/Matlab/test_GivensDiagPar.m

misc/test/src/Python/test_FaustPy.py

src/algorithm/factorization/faust_EigTJ.h

src/algorithm/factorization/faust_EigTJ.hpp

src/algorithm/factorization/faust_EigTJComplex.h

src/algorithm/factorization/faust_EigTJComplex.hpp

src/algorithm/factorization/faust_EigTJGen.h