GDB 8.3 release -- time to start the release process

[Joel Brobecker <brobecker@adacore.com>]

Hello everyone,

It's hard to believe it, but it might be time to start working on
the next major release. For now, I'm labeling that next release
as 8.3, but I have not forgotten the discussion about changing
the versioning.

If we are to target the date that we published, we would want to
create the branch around Jan 15th. So we are about a month away.

As always, I created a wiki page to help track the various activities
around the release process. In particular, it provides links to
bugzilla queries giving us a list of PRs targetting 8.3:

    https://sourceware.org/gdb/wiki/GDB_8.3_Release

Let's start a list of items we'd like to look into before we branch:

  * [JoelB] <NO PR>
    GDB crash or timeout on Windows native

        I do not have much information yet, as I haven't had time
        to investigate. But it looks like we're having timeouts
        or crashes. They seem specific to Windows Server 2016,
        and the problem must have appeared between Nov 19th and
        Nov 26th.

        My plan is to take a look at it during the Xmas break.

Anything else? As far as I can tell, we currently have no PR listed
for 8.3 (https://sourceware.org/bugzilla/buglist.cgi?bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=SUSPENDED&bug_status=WAITING&bug_status=REOPENED&list_id=45369&product=gdb&query_format=advanced&target_milestone=8.3)!

Thank you!
-- 
Joel