bug#10754: define-minor-mode and doc of derived mode

[Drew Adams]

> There are over 200 modes that use define-minor-mode. I'm not sure how
> many of those docstring have argument documentation. For some of those
> modes documenting arg doesn't make much sense.
> 
> For those who have an arg document, does it make sense to do them all in
> a single patch ? Also, is there any consensus on using %{arg} ? I have a
> local patch with linum-mode changed, which I can send for review.

Is this related to bug #29497?