Add Darwin options from specs to darwin.opt

[Mike Stump]

On Dec 16, 2010, at 3:01 PM, Joseph S. Myers wrote:
> In preparation for the driver only accepting options listed in .opt
> files, and not other options that simply happen to match some spec,
> this patch adds Darwin options matched by specs to darwin.opt.

> OK to commit?

Ok.


I'm half expecting that the entire reason for using -Z prefixes will eventually go away and we can just remove all the -Z stuff.