PROBLEM:  (IPMT C980306-4563)    (Patch ID: OSF425-204)
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1. Fix kernel class scheduler race condition that could leave a thread stuck
   without getting anymore CPU time.  This condition can be cleared by disabling
   and then re-enabling the class scheduler.  This fix will eliminate the
   thread hang.

2. libclass.a: locking semaphore modified so that if an application
   (class_daemon) exits while holding the semaphore, the kernel will
   drop it in the exit code.  This avoids class scheduler hangs.
   A system reboot is currently the only way to clear the lock.  This
   fix will avoid the need to reboot since the kernel "will do the
   right thing" when the application holding the semaphore exits.

PROBLEM:  (QAR 72419, CLD BCSM51GL2)    (Patch ID: OSF425-707)
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This patch fixes a class_admin/class_daemon problem. When a PID had been
added to a class it can not be removed from the class scheduler until the
process terminates or the class_scheduler has been stopped.