* include/atomic.h (atomic_and, atomic_or): Define.

	* include/atomic.h (atomic_and, atomic_or): Define.
nptl/
	* sysdeps/unix/sysv/linux/alpha/lowlevellock.h (lll_robust_mutex_dead,
	lll_robust_mutex_trylock, lll_robust_mutex_lock,
	lll_robust_mutex_cond_lock, lll_robust_mutex_timedlock,
	lll_robust_mutex_unlock): New macros.
	(__lll_robust_lock_wait, __lll_robust_timedlock_wait): New prototypes.
	* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/lowlevelrobustlock.c: New file.