[patch] more comment cleanups

[Michael Snyder]

Joel Brobecker wrote:
>> If we go for a higher number and want to enforce it (and I'm not
>> saying we should), we should try to add a suitable setting to the C
>> source files (in the local variables section), or maybe provide a
>> .dir-locals.el file, for the benefit of Emacs users.  Of course, not
>> everyone uses Emacs.
> 
> I don't think we should enforce any number, but rather try to provide
> a guideline. After Mark's email, I'd be happy to put the guideline at
> 70 chars, and see how it goes. I realize that, in all fairness, it isn't
> the most important issue to be discussing ;-).
> 

Maybe a "guideline" (eg. 70), and a "hard limit" (eg. 80)?