moving imports to top of module
moving imports to top of module

based on email threads showing excessive GIL lock time and deadlocks
when doing extensive imports not at module load time

kormat/kazoo,jacksontj/kazoo,rackerlabs/kazoo,bsanders/kazoo,tempbottle/kazoo,pombredanne/kazoo,AlexanderplUs/kazoo,harlowja/kazoo,rockerbox/kazoo,kormat/kazoo,max0d41/kazoo,harlowja/kazoo,max0d41/kazoo,python-zk/kazoo,python-zk/kazoo,rgs1/kazoo,rackerlabs/kazoo,bsanders/kazoo,Asana/kazoo,AlexanderplUs/kazoo,pombredanne/kazoo,rgs1/kazoo,rockerbox/kazoo,jacksontj/kazoo,tempbottle/kazoo