swift234

Fix a problem where we didn't bind anondecls early enough which prevented them from getting their types when in nested closures.  For example,
var test : int->int->int = _0;

now sema's to:

(vardecl 'test' type='int -> int -> int'
 (closure_expr type='int -> int -> int'
   (anondecl '_0' type='int')
   (closure_expr type='int -> int'
     (declref_expr type='int' decl=_0))))


Swift SVN r155