htl: Add sem_clockwait support

* sysdeps/htl/sem-timedwait.c (__sem_timedwait_internal): Add clock_id
parameter instead of hardcoding CLOCK_REALTIME.
(__sem_clockwait): New function.
(sem_clockwait): New weak alias.
* sysdeps/htl/sem-wait.c (__sem_timedwait_internal): Update declaration.
(__sem_wait): Update call to __sem_timedwait_internal.
* htl/Versions (GLIBC_2.32): Add sem_clockwait.
* sysdeps/mach/hurd/i386/libpthread.abilist (sem_clockwait): Add symbol.
* nptl/Makefile (tests): Move tst-sem5 to...
* sysdeps/pthread/Makefile (tests): ... here.