[PATCH] README: Define what a copyright year range means.

[Roland McGrath]

> GLIBC uses year range notation for copyright years.

It mostly does not, since that's what the FSF told me to do eons ago.

> There is nothing wrong with using ranges, but
> we should adjust the README to mention them.
> 
> `6.5 Copyright Notices' says:
> ~~~
> You can use a range (‘2008-2010’) instead of listing individual years (‘2008, 2009, 2010’) if and only if: 1) every year in the range, inclusive, really is a “copyrightable” year that would be listed individually; and 2) you make an explicit statement in a ‘README’ file about this usage. 
> ~~~
> http://www.gnu.org/prep/maintain/html_node/Copyright-Notices.html

Given that, I guess using ranges is OK now.

> +these additional notices to be distributed. License copyright years may be

Two spaces after a sentence.

> +listed using range notation e.g. 2000-2011, indicating that every year in

comma for e.g.


Thanks,
Roland