Move contents of happy-codegen-common into happy-grammar; delete
#373
| Job | Run time |
|---|---|
| 3m 59s | |
| 3m 42s | |
| 3m 34s | |
| 3m 25s | |
| 3m 12s | |
| 3m 13s | |
| 3m 15s | |
| 3m 18s | |
| 3m 35s | |
| 3m 33s | |
| 3m 14s | |
| 3m 45s | |
| 41m 45s |