Re: CC mode loads CL

[Richard Stallman]

    In addition, cl redefines `macroexpand' as an alias for
    `cl-macroexpand'.  I do not know of any problems caused by these three
    redefinitions, unless one tries to "unload" cl, which would apparently
    give problems for several unrelated reasons too.

I don't think we need to worry about this.

I gave CL an unload hook that gives an error.  That will make it
clear that unloading CL is unsupported, and that prevent Emacs from
trying to unload it and messing it up.