hurd_thread_cancel and hurd_condition_wait

[Leonardo Pereira]

I was checking old hurd code and I saw that on the glacial age, Hurd
simply used thread_cancel and condition_wait, but on that date a
mysterious migration to hurd_thread_cancel and hurd_condition_wait
happened.

What I really wanna know is why this change were necessary, since this
may help me on the migration of cthreads->pthreads. And what happend
after a thread be cancelled by hurd_thread_cancel, as far as I got it,
just the condition wait is canceled and the thread resturn to the 'old
job', is that right?

Thanks for reading.

ps.: I hope worry with the 'mysterious' and 'glacial age' ;)