kafka-969; Need to prevent failure of rebalance when there are no brokers available when consumer comes up; patched by Sriram Subramanian; reviewed by Joel Koshy and Jun Rao
Merge branch '0.8' of https://git-wip-us.apache.org/repos/asf/kafka into 0.8
KAFKA-974 can't use public release maven repo because of failure of downloaded dependency
Merge branch '0.8' of https://git-wip-us.apache.org/repos/asf/kafka into 0.8