bug#29420: 26.0; doc of `list-packages'

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Sat, 19 Oct 2019 04:04:21 +0200
> Cc: Eli Zaretskii <eliz@gnu.org>, 29420@debbugs.gnu.org
> 
> +The status @samp{dependency} means that the package was automatically
> +installed to satisfy a dependency of another package.
> +
> +The status @samp{new} is equivalent to @samp{available}, except that
> +it means the package became newly available on the package archive
> +after your last invocation of @kbd{M-x list-packages}.
> +
> +The status @samp{incompat} means that the package cannot be installed
> +for some reason, for example because it depends on uninstallable
> +packages.
> +
> +The status @samp{obsolete} means that the package is an outdated
> +installed version; in addition to this version, a newer version is
> +already installed.
> +
> +The status @samp{avail-obso} means that the package is available for
> +installation, but there also exists a newer version.
> +
> +The status @samp{disabled} means that the package has been disabled
> +using the variable `package-load-list'.

This kind of list is better formatted as a @table.

Thanks.