Extra Zero/Shark patches for review

[Landon Fuller]

On Nov 24, 2009, at 11:22 PM, Greg Lewis wrote:

> Thanks Kurt!  I plan to get something committed in the next couple of days.
> So far things seem to be working well with Zero on i386 and amd64.  I'm
> working on it on sparc64 where it currently runs trivial programmes but
> definitely segfaults in other situations.  So I expect that sparc64 support
> won't be fully ready.  Bootstrapping on sparc64 is currently a pain too.

Over the weekend I also started looking at Mac support based on Christos' latest patch.

There are a few outstanding issues in regards to functionally not available from the OS provided atomic ops,
but assuming I had time I was hoping to wrap that up this weekend.

-landonf