bug#25627: 25.1; `help-make-xrefs' loads `cl-extra.el' now

[npostavs]

Drew Adams <drew.adams@oracle.com> writes:

>> > Why don't more (even most) of the files distributed with
>> > Emacs have this variable set (to non-nil)?
>> 
>> Loading functions one by one can be slower than loading them all at
>> once.  Some justification would be needed for adding this (e.g., if a
>> file contains many independent functions that would usually be used in
>> isolation).
>
> Yes, I read that.  A guess would be that that would be the case
> for many more files than the few that use it now.
>
> Files could also be split, to factor out functions for which
> that is true.

Possibly, but I would guess the benefits of doing this would be rather
tiny.  I mean, the best we can hope for is to save a few hundred
kilobytes of RAM, right?