when credit is spent by the TaskFarm workers, it should be reflected in the leftover credits
when credit is spent by the TaskFarm workers, it should be reflected in the leftover credits

git-svn-id: 3c739b8a310a10be68afd4fdd7f3d450bf1457ba@4822 ef35cc4a-2640-4bbf-98bc-65920db7d8ae

ema/conpaas,ema/conpaas,ema/conpaas,ema/conpaas,ema/conpaas