[patch/rfc; rfa:doco] Add -Wunused-function to -Werror list

[Andrew Cagney]

>> Date: Sun, 15 Feb 2004 18:27:59 -0500
>> From: Andrew Cagney <cagney@gnu.org>
>> 
>> I've checked in the config change, Eli, how's the doco?
> 
> 
> Sorry, missed your original message.  The gdbint.texinfo patch is
> okay.

Thanks, committed.

Andrew