Update from debian/bookworm for apertis/v2024dev2

debian/patches/kfreebsd/local-fbtl.diff

@@ -14125,6 +14125,40 @@
 +.NOTPARALLEL:
 +endif
 --- /dev/null
++++ b/fbtl/TODO
+@@ -0,0 +1,31 @@
++- we should probably extend pthread_mutexattr_t with a field to create a
++  single linked list of all instances.  This requires changing the
++  pthread_mutexattr_* functions.
++
++
++- a new attribute for mutexes: number of times we spin before calling
++sys_futex
++
++- for adaptive mutexes: when releasing, determine whether somebody spins.
++If yes, for a short time release lock.  If someone else locks no wakeup
++syscall needed.
++
++
++
++- test with threaded process terminating and semadj (?) being applied
++  only after all threads are gone
++
++
++
++- semaphore changes:
++
++  - sem_post should only wake one thread and only when the state of
++    the semaphore changed from 0 to 1
++
++    this also requires that sem_wait and sem_timedwait don't drop the
++    post if they get canceled.
++
++  - possibly add counter field.  This requires reviving the
++    differences between old and new semaphose funtions.  The old ones
++    stay as they are now.  The new once can use an additional field
++    wich is the counter for the number of waiters
+--- /dev/null
 +++ b/fbtl/TODO-kernel
 @@ -0,0 +1,20 @@
 +- setuid/setgid must effect process