Add FUTEX_* to semver/netbsd.txt.

Author: m-ou-se

libc-test/semver/netbsd.txt

@@ -346,6 +346,28 @@ FIONWRITE
 FIOSETOWN
 FLUSHO
 FOPEN_MAX
+FUTEX_WAIT
+FUTEX_WAKE
+FUTEX_FD
+FUTEX_REQUEUE
+FUTEX_CMP_REQUEUE
+FUTEX_WAKE_OP
+FUTEX_LOCK_PI
+FUTEX_UNLOCK_PI
+FUTEX_TRYLOCK_PI
+FUTEX_WAIT_BITSET
+FUTEX_WAKE_BITSET
+FUTEX_WAIT_REQUEUE_PI
+FUTEX_CMP_REQUEUE_PI
+FUTEX_PRIVATE_FLAG
+FUTEX_CLOCK_REALTIME
+FUTEX_CMD_MASK
+FUTEX_WAITERS
+FUTEX_OWNER_DIED
+FUTEX_SYNCOBJ_1
+FUTEX_SYNCOBJ_0
+FUTEX_TID_MASK
+FUTEX_BITSET_MATCH_ANY
 F_CLOSEM
 F_GETNOSIGPIPE
 F_GETOWN