[RFA/doco] Update copyright year in refcard

[Eli Zaretskii]

> Date: Fri, 1 Jan 2010 15:30:41 +0400
> From: Joel Brobecker <brobecker@adacore.com>
> Cc: gdb-patches@sourceware.org
> 
> That still leaves me
> wondering what should be done for the copyright notice in manuals, or
> the copyright year printed by GDB, gdbserver, etc. I believe that GDB
> does the right thing, and just prints the current year.  It is not
> so bad if it's a few years, but it looks a bit silly when the list
> spans an entirely line or more... I looked at a few manuals,
> particularly the ones that got reprinted, and they seem to follow
> a convention where the print one line per reprint, something like:
> 
>     (c) 2004 This Press Ltd
>     (c) 2006 This Press Ltd
>     (c) 2008 A Better Press And Sons Ltd
> 
> I'm happy to follow whatever the FSF dictates, but it would be nice
> if we could simply have just the current year in our manuals.

The year in the printed manual is a separate issue.  I don't know
about that, I think we should ask if we are unsure.

I was talking only about copyright notices on files we distribute, be
it part of the manual sources, the GDB sources, or whatever.