bug#27033: package mode plural handling

[Jean-Christophe Helary]

> On May 23, 2017, at 8:03, Jean-Christophe Helary 
> <jean.christophe.helary@gmail.com> wrote:
> 
> When single packages are handled, sometimes the messages keep the plural form.
> 
> For ex:
> 
> Package menu: Operation finished.  1 packages are no longer needed, type ‘M-x 
> package-autoremove’ to remove them
> 
> The issue comes from the hardcoded message in line 3276 of package.el. I'll 
> see if I can do something about that later this week.

I've sent a patch in the "package.el strings" thread on emacs-devel but it 
doesn't seem to have been applied yet. Is there anything wrong with it?

> Jean-Christophe