bug#47878: Mark outline commands as repeatable

[Juri Linkov]

> I've implemented your suggestions. Letting the editing map inherit from
> the navigation map doesn't seem like a good idea, as long as repeat-mode
> overwrites the repeat-map, because that makes commands disappear all of
> a sudden.

Thanks, I've tested your patch, and everything works swimmingly,
so now pushed to master.  Please close this feature request
when you think everything is done here.

> The extra keys without control are convenient, but it does
> write a lot into the mini-buffer.

Displaying the keys is customizable now, so this is less problematic.