(VARARGS_STDARG_FUNCTION): New macro.

(VARARGS_STDARG_FUNCTION): New macro.

(i960_function_name_declare, output_function_profiler,
i960_function_epilogue, i960_output_call_insn,  i960_output_ret_insn,
i960_reg_parm_stack_space): Use it.
(compute_frame_size): Don't use current_function_pretend_args_size.
(i960_function_arg_advance, i960_function_arg): Don't use parameter
named.
(i960_setup_incoming_varargs): No need to adjust first_reg_offset
after setting it.  Don't save last named argument to stack.
Don't set pretend_size.

From-SVN: r8322