KOS_OP_TAIL_CALL_STAR
Style: STAR. Arg = bitflags (1 = has *args, 2 = has **kwargs).
Stack: Same layout as CALL_STAR:
[..., callable, pos, kwd]. Pop order and the tuple coercion as CALL_STAR; the call then proceeds as TAIL_CALL describes, withposandkwdspread.