[wwwdocs] Add -mpc* options to 4.3 Changes?

[Gerald Pfeifer]

On Fri, 27 Apr 2007, Matt Fago wrote:
> As a user I think it would be helpful to add the new -mpc* set of 
> options to the 4.3 Changes web page. I didn't realize these were 
> available until someone mentioned them on gcc@gcc.gnu.org recently.
> 
> Perhaps something along the lines of the below (or whatever Uros etc 
> thinks)?

Looks good to me!  Thanks for reminding us to document this and even
coming up with a patch.

Uros, if you agree go ahead and commit the patch, or let me know and
I can commit it as well.

Thanks,
Gerald