[REQ] Halt condition check for resuming

[Zom-B]

In my recent Project I had done a animation and rendered it using the ruby script by Fused.
This script also enables to resume renderings automatically...

My request is that for resuming the halt condition check gets done in the first place!

At the moment The master loads the scene does all the subdiv and Kd-tree stuff bla bla,
but checks the halt condition just after calculating the first samples... a big wast of time!