Bug#971391: gnome-core: version number is confusing

[Simon McVittie]

On Tue, 29 Sep 2020 at 16:29:04 -0300, David Bremner wrote:
> According to https://wiki.debian.org/Gnome?action=show&redirect=GNOME,
> gnome is currently 3.36.4 in unstable.

That's both false (we're halfway through a transition to 3.38.x)
and unrealistically precise. I've replaced that with details of
the major version we expect to ship in bullseye, and a note that for
testing/unstable it's better to look at individual packages, in the
hope that by giving less precise information the wiki page won't be
perpetually outdated.

gnome-shell is probably the best "core" package to use as a marker for
how new the desktop generally is, and it's also responsible for the
main thing that GNOME users see when they log in.

I also removed some other outdated information from the Gnome wiki page
(gnome-dbg was most recently shipped in jessie, gconftool2 hasn't been a
way to configure GNOME for years, etc.), but I'm sure there's plenty more.

    smcv