Update.

Update.

	* tst-rwlock6.c: More pthread_rwlock_timedwrlock and
	pthread_rwlock_timedrdlock tests.
	* tst-rwlock7.c: More pthread_rwlock_timedwrlock tests.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S:
	Check for invalid tv_nsec field.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S:
	Likewise.

	* pthread_mutex_trylock.c (__pthread_mutex_trylock): Protect
	recursive mutex of overflow.

	* tst-attr1.c (do_test): Add test for pthread_mutexattr_setpshared.