Fix exclusions

Add some exclusions for hits==0:

function assignments:

`local f1 = function(...)`

`f2 = function(...)`

multi-column tables (mainly effects luajit generated cov):
```
    a = {
       1,
       2,
    }
    c = {
       b = 3,
    }
``` 

Note: The last (multi-column) table entry should have a trailing comma, to be detected as "misleading" hits==0