Threads dying, memory issues?

[sekao]

Yeah there's no documentation right now; I'm guessing the idea is to wait until 
ORC is the default in 2.0, but @Araq would know better. Anyway the API didn't 
change much. The one huge benefit is that they can be shared between threads; 
the old channels had to be declared as globals or manually 
allocated/deallocated due to the limitations of refc.