Extra Zero/Shark patches for review

[Kurt Miller]

Hi Greg,

Greg Lewis wrote:
> Sensational.  I like this implementation.  The #else will need to become
> an '#elif __FreeBSD__' though and we'll need to expand things for the
> other BSDs unless I'm mistaken.  On MacOS X we'll need to use the atomic
> functions in <libkern/OSAtomic.h>.  I'm not sure about OpenBSD.
> 
> Kurt, how do you feel about this version and are their atomic definitions
> on OpenBSD we can use?  I took a quick look in CVSweb last night and didn't
> really see anything, but I could have easily missed it.

I've been having difficulty finding the time to work on this. I don't
want to hold you or Christos up. Please go forward with what works for
FreeBSD and NetBSD. If I need to add support for older gcc, I can do
that later when I have the time to work on it.

Thanks,
-Kurt