[RFA][objc] Identifier cleanup

[David Ayers]

Ziemowit Laski wrote:
> David,
> 
> This is a good idea, but perhaps I can convince you wait about a week, 
> and then do this on the objc-improvements-branch instead? :-) Among 
> other things, my current objc-improvements-branch mods (not all of them 
> yet committed, due to some DejaGNU regressions) create builtin typedefs 
> for 'id' and 'Class', so that neither needs to be a keyword.  I've also 
> folded get_object_reference and get_static_reference into a single routine.
> 
> Would that be OK?
> 

Actually, how about this... commit this to mainline and I'll work up a 
patch for the branch when you say go.  That way will have the feature no 
matter what happens to the merge.

Deal?

Cheers,
David