Re: bookOutputName seems broken in 2.25.12

[Werner LEMBERG]

> I've tried both of the methods of naming an output file in the book
> environment.  \bookOutputSuffix works fine.

Please give complete examples – I can't reproduce the issue (with
current git).  I've tried

```
\book {
  \bookOutputName "Comin-Home-Baby_Tenor-1"

  { c'4 }
}
```

and

```
\book {
  \paper {
    output-filename = "Comin-Home-Baby_Tenor-1"
  }

  { c'4 }
}
```

Both snippets produce file `Comin-Home-Baby_Tenor-1.pdf`, as expected.


    Werner