Consistent ordering of RECURSIVE/CUDA bodies: CUDA first, recursive

[abouteiller]

Consistent ordering of RECURSIVE/CUDA bodies: CUDA first, recursive second.

This ordering is consistent with existing ordering in zgeqrf, and most kernels in zpotrf (except for po_po); this will prefer using GPU kernels if available, and fallback to recursive if load balancer lets a kernel fallback to CPU.

[bosilca]

This is not how we decided to fix this issue.

[bosilca]

The correct fix should be in parsec and consist on creating a MCA parameter to define the order in which the BODYs are added to the incarnation arrays. However, this PR provides s consistent ordering in DPLASMA and improves the code readability.