builtin_apply et al

[Stan Shebs]

Nathan Sidwell wrote:

> I can see that the builtin_apply *might* be useful somewhere, but is it
> really being used beyond test cases?
>
> Dare I suggest deprecating this 'feature'? (rather than fixing it)

The consensus among the few who've thought about this is that
yes, it should flushed from libobjc and then officially deprecated.
ObjC needs a certain amount of visibility into C calling conventions
to do its thing, but it's tricky to generalize and not many hackers
work on libobjc (the NeXT/Apple runtime mostly does it with assembly
code, and is thus not very portable).

Stan