Reshape loses descriptor in distmem backend

Compiling https://gitlab.sac-home.org/sac-group/2023-array for distributed memory crashes on a segfault.

My working hypothesis is as follows:

We have a distributed array SACp_emal_47674_a whose data is assigned.

      { SACp_emal_47666_a1 = SACp_emal_47674_a; };

However, SAC_ND_A_DESC (SACp_emal_47674_a) is not copied over, leading to a free of SACp_emal_47666_a1, while it should be a ShrayFree.