Differences between libc_r and libthread_xu

["Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>]

Hey,

I just noticed that libthread_xu implements a couple of functions which 
libc_r doesn't provide.  Somebody should pull up these functions and make 
the libs en par, otherwise these functions cannot be used from 
libthread_xu either.

sweatshorts % diff cr xu
0a1
> pthread_atfork
3a5
> pthread_attr_getguardsize
13a16
> pthread_attr_setguardsize
20a24,30
> pthread_barrier_destroy
> pthread_barrier_init
> pthread_barrier_wait
> pthread_barrierattr_destroy
> pthread_barrierattr_getpshared
> pthread_barrierattr_init
> pthread_barrierattr_setpshared
30a41,42
> pthread_condattr_getclock
> pthread_condattr_getpshared
31a44,45
> pthread_condattr_setclock
> pthread_condattr_setpshared
50a65
> pthread_mutex_timedlock
68a84,85
> pthread_rwlock_timedrdlock
> pthread_rwlock_timedwrlock
91a109
> pthread_timedjoin_np

As you can see, libc_r is missing a couple of functions.  It would be very 
nice if somebody could have a look on how to implement those and/or create 
null-shims.

cheers
  simon

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