[RFA] Define EILSEQ if not defined by errno.h

[Eli Zaretskii]

> Date: Mon, 13 Apr 2009 21:51:56 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: pedro@codesourcery.com, gdb-patches@sourceware.org
> 
> +/* Some systems, don't have EILSEQ, so we define it here, but not as
                  ^
I fixed this typo in a subsequent commit.