Re: byte-compiler warnings about undefined functions can now be silenced

[Richard Stallman]

    > Also, IMO it would be good to add declare-function to the 22.2
    > branch, (even as an empty stub if it's considered too risky), this
    > should help with compatibility between the 2 branches.

    I don't have much of an opinion. It could easily be added as a no-op
    (it's almost a no-op now...).

I think that is the best approach.