Checkpoint unloading fix

[Eirik Nygaard]

I have written a small patch that should remove the possiblity of a process
being checkpointed when the check point module is being unloaded.
Not quite for about it, so if anyone have some feedback I would be grateful.

http://eirikn.kerneled.org/dragonfly/checkpoint_unload.patch

-- 
Eirik Nygaard
eirikn at xxxxxxxxxxxx    Never let a computer know you're in a hurry.