Hello,

This is an updated version of the script I proposed a few months ago:
http://www.sourceware.org/ml/gdb-patches/2011-12/msg00337.html

At the time, we held off on it because gnulib's bootstrap was
supposed to do the same thing. It's been 10+ months since that
suggestion was made, so I think we should go ahead with this script.

Independently of bootstrap, what this script brings is a verification
that the right versions of the auto-tools are being used. This avoid
unwanted changes due to differing versions. It also allows us to store
the gnulib SHA1 used for the import, rather than having to fish
it out from somewhere in a ChangeLog file.

If someone ever gets to using gnulib's bootstrap, then great - I think
it can easily be folded into this script. In the meantime, it helps,
because I no longer have to figure how to regenerate the configury
and the makefiles...

gdb/ChangeLog:

        * gnulib/update-gnulib.sh: New script.

Script tested by running it, and verifying that it does not introduce
any change.

OK to commit?

Thanks,
-- 
Joel