Non  existence of _FPU_EXTENDED definition on powerpc64 (like it is for apple and arm)
    prevent compilation when WITH_CUDA is set. Adding powerpc64 as case to not use these
    definitions

        modifié:         modules/cudalegacy/test/TestHaarCascadeApplication.cpp
        modifié:         modules/cudalegacy/test/test_precomp.hpp
Signed-off-by: Thierry Fauck <tfauck@free.fr>

This reverts commit fba72cb6, reversing
changes made to 02131ffb.

Fixed issues: #2737 #2848

2) NVidia tests for GPU
3) FD sample that uses NVidia's interface.