Implement finite field ccopy, neg, cneg, nsqr, ... for CUDA target
#2116
| Job | Run time |
|---|---|
| 55m 35s | |
| 54m 37s | |
| 4m 40s | |
| 4m 17s | |
| 8m 49s | |
| 9m 8s | |
| 1m 3s | |
| 1m 2s | |
| 51s | |
| 45s | |
| 4m 52s | |
| 3m 41s | |
| 2h 29m 20s |