[haXe] blocks and yield?

[Nicolas Cannasse]

> hi list
> 
> It'd be nice to have the rubyish block and yield construct in haxe,
> it's just a bit of 'syntactic sugar' as it seems to me all the
> requisite plumbing exists.
> 
> obj.method() { x -> block }

For blocks, there is a problem of syntax, since using { } will lead to
major conflicts.

For "yield", this need appropriate VM support which is not available
either in Flash or JS.

Nicolas