bug#22817: 25.0.91; [PATCH] Include versioned preloaded libraries in `package--builtin-versions'

[Chris Feng <chris.w.feng@gmail.com>]

>>>> Also, since `package--builtin-versions' is now complete, should we
>>>> remove the version info in `package--builtins'?
>>> Not sure what you mean nor what would be the benefit.
>> I just noticed you wrote this in finder.el:
>>     ;; FIXME: Now that we have package--builtin-versions, package--builtins
>>     ;; is only needed to get the list of unversioned packages and to get the
>>     ;; summary description of each package.
>
> Yes, but that still doesn't tell me what you suggest we do ;-)

I think we can simply drop the version info in `package--builtins' /
`package--bi-desc' so as to eliminate duplicated info and prevent
future confusion.  Also the variables are only used in a few places so
it'd be easy to make the change.

>>> How 'bout you install your patch into master and we install the patch
>>> below into emacs-25?
>> That'd be okay.
>
> Eli?  John?

Chris