[Patch]Fix the output of argument "options" for wait4, waitpid and waitid

[Cai Fei]

Hello, Frank.

Sorry for late answer.

Frank Ch. Eigler wrote:
> Cai Fei <caifei@cn.fujitsu.com> writes:
>
>   
>> The system calls wait4, waitpid and waitid has an argument "int options".
>> [...]
>> and the values of WSTOPPED and WUNTRACED are equal.
>>     
>
> It looks like all the matching names have matching values across the
> system calls (which makes sense).  So why not just add WNOWAIT to the
> _wait4_opt_str(), and perhaps rename it to indicate that it accepts a
> union of all the wait* options?
>   
Is there any misunderstanding? I can not get your meaning. WNOWAIT 
already exists in
_wait4_opt_str() before the adding of _waitid_opt_str().