Small fixes for test suite

The carriage return issue resulted in this annoying message:

```
case lhs.lua did not fail properly!

+lglob: lhs.lua:1: undefined set foo
lglob: lhs.lua:2: redefining global print

-lglob: lhs.lua:1: undefined set foo
lglob: lhs.lua:2: redefining global print
```

The "case file not found" issue is actually that `testwl.lua` is apparently not committed, but the test suite might as well deal with it. Still, if you have it, maybe you should commit it :)