Bug#690014: lintian: please encourage updating to config.guess and config.sub that support arm64

[Russ Allbery <rra@debian.org>]

Paul Wise <pabs@debian.org> writes:

> Please encourage updating to config.guess and config.sub that support
> arm64. The GNU name for arm64 is aarch64. aarch64 was added to
> config.guess/config.sub in d6f39af[1] on 2012-02-14. The timestamp for
> config.sub was next updated in 9240a8a[2] to 2012-04-18. The timestamp
> for config.guess was next updated in 30d03f3[3] to 2012-06-10.

I think it might also be a good idea to update the description of
outdated-autotools-helper-file to explicitly recommend using dh_autoreconf
during the build.  There is a reference to dh_autoreconf in the
README.Debian in autotools-dev, which we refer to, but I think it's the
cleanest solution for most cases and it might be a good idea to make the
recommendation a lot more prominant.

-- 
Russ Allbery (rra@debian.org)               <http://www.eyrie.org/~eagle/>