[patch] more comment cleanups

[Eli Zaretskii]

> Date: Fri, 31 Dec 2010 16:19:58 -0800
> From: Michael Snyder <msnyder@vmware.com>
> CC: Mark Kettenis <mark.kettenis@xs4all.nl>,  "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
> 
> I'm being guided by where eMacs breaks up lines when I format a comment,
> which is something like 72 columns.

Actually, it's 70 columns by default.