ldconfig in netbsd is purely for a.out support. I don't think a.out support is important in /rescue, no platform we have uses it (since long ago).
it's the majority of the machine-dependent logic in /rescue. I'd like to remove ldconfig and mark it machine-independent obsolete. I will commit this change in a few days if nobody objects. (I don't see why anyone would, but I feel compelled to make a post for a removal.)
