Changes to unix

Changes to unix:
commit 10dbdce2826290e9d7b81e9963cccd03b8aa3678
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Sat Oct 26 16:39:10 2013 +0200

    Update bug-reports URL

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>