[OSy] Results of task #5B + assert explanation

[Vojtech Horky]

Dear all,

the results of the latest labs (task #5, group B) are now in SIS. If you 
have passed, you should see a check mark in "Task 5 (labs)". If your 
implementation does not work as expected (and sometimes even if it 
does), you should find a short explanation in "Task 5 (notes)".

Please contact me ASAP if you find any discrepancies.

Regarding the issue I discussed with several of you regarding the assert 
for cpuid == 0: I am sorry for the caused confusion as I explained the 
matter incorrectly during the labs.

The assert is still needed there as the solution actually works on 
single CPU only because there is only single queue. For proper 
implementation on multiple CPUs, there would have to be a special queue 
(and everything) for each CPU (indexed by cpuid()). The implementation 
then worked on multiple CPUs only because there was always one sender only.

- Vojtech Horky