gnuchess: Support for new ppc64le arch

[jay shankar]

Hi Antonio Ceballos,

We are adding support for new ppc64le (IBM powerPC Little Endian)
architecture as part of which we are looking at all the packages that
need update.
I was looking at  gnuchess-6.1.0 tarball and was failed to build  on
ppc64le machine because of outdated config.guess.

Latest config.guess with ppc64le support is available at :
http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD

Would it be possible for you to spin up a newer version of "gnuchess"
with latest config.guess ?
Alternatively, if you want us to send a patch to config.guess, we can do
so too.

I can help to validate the new release tarball of the "gnuchess" works
well by compiling on ppc64le machine.

Appreciate your response.

Thanks and Regards,
Jay Shankar