[PATCH] Linuxthreads pthread_atfork fix

[Roland McGrath]

> LT needs to follow NPTL lead here.
> 
> 2003-04-02  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* Makefile (libpthread-routines): Add pthread_atfork.
> 	(libpthread-static-only-routines): Add pthread_atfork.

I put this in.

Thanks,
Roland