Philippe 18/09/2023: FLAT_INV: fix for NOOPENACC (deallocate ZBAND_YT and ZBAND_YRT only if allocated)

Philippe 22/05/2023: FFT: deduplicate FAST_TRANSPOSE, FAST_SUBSTITUTION_2D, FAST_SUBSTITUTION_3D and FAST_SPREAD

Philippe 22/05/2023: FFT: FFT991: pass argument PWORK as a 3D array (no need to use an intermediary 1D pointer at this level)

Philippe 16/05/2023: MNM_MEM_POSITION_PIN / MNH_MEM_RELEASE: provide CNAME optional dummy argument + correct some related small problems