objc.dg/method-2.m fix with the GNU runtime

[Stan Shebs]

Nicola Pero wrote:
> 
> One comment on the fix so it's recorded on the mailing list - the fix
> statically types `self' in a class method to be the class the method is
> part of.  This maximes error checking in normal situations, but gets in
> the way if you want to redefine self in a class method to be something
> else.  But in that case, you can still get the old behaviour of having
> self to be untyped id by simply casting self to id.

It would be nice to have a language specification to be a home for
comments like this.  Sigh.

> Ok to commit the new two testcases and apply the patch ?

Yes please.  Thanks!

Stan