[PATCH] posix: New function posix_spawn_file_actions_addchdir_np [BZ #17405]

[Carlos O'Donell]

On 10/26/18 10:07 AM, Florian Weimer wrote:
> I'm not adding documentation in this patch because none exists for the
> posix_spawn functionality.

We can do better though, I'm happy even if we just add the prototypes
into the manual to give others a place to hang more text in the future.
The safety notes would be helpful too, is it MT-safe, AS-safe etc.

Would you please take a stab at adding something minimal?

-- 
Cheers,
Carlos.