KAFKA-957; MirrorMaker needs to preserve ordering for keyed messages from source cluster; patched by Guozhang Wang, reviewed by Joel Koshy
KAFKA-983; Expose MirrorMaker cleanShutdown method. Patched by Swapnil Ghike.
kafka-959; DefaultEventHandler can send more produce requests than necesary; patched by Guozhanh Wang; reviewed by Jun Rao
KAFKA-991; Reduce the queue size in hadoop producer; patched by Swapnil Ghike, reviewed by Jay Kreps and Joel Koshy.
KAFKA-991; Rename config queue size to queue bytes in hadoop producer; patched by Swapnil Ghike, reviewed by Joel Koshy.
kafka-994; High level consumer doesn't throw an exception when the message it is trying to fetch exceeds the configured fetch size; patched by Sam Meder; reviewed by Jay Kreps and Jun Rao
Merge branch '0.8' of http://git-wip-us.apache.org/repos/asf/kafka into 0.8
KAFKA-915; Mirror maker system tests should wait for topics to be created. (This patch is a work-around until KAFKA-956 is resolved.); patched by John Fung; reviewed by Joel Koshy.
KAFKA-992 Double Check on Broker Registration to Avoid False NodeExist Exception; reviewed by Neha Narkhede and Swapnil Ghike
Misc. minor house-keeping fixes: add reasonable GC settings, fix up README, fix up example configs, fix the logging for tools, use a log directory for logs instead of the root directory.
KAFKA-992 follow up. Fix broken unit test
kafka-989; Race condition shutting down high-level consumer results in spinning background thread; patched by Phil Hargett; reviewed by Jun Rao
KAFKA-999 Controlled shutdown never succeeds until the broker is killed; reviewed by Neha Narkhede
kafka-1003; ConsumerFetcherManager should pass clientId as metricsPrefix to AbstractFetcherManager; patched by Swapnil Ghike; reviewed by Jun Rao
KAFKA-992 follow up: Fix the zookeeper de-registration issue for controller and consumer; reviewed by Neha Narkhede
Revert "KAFKA-992 follow up: Fix the zookeeper de-registration issue for controller and consumer; reviewed by Neha Narkhede"

This reverts commit 81c49bbdae5e490f9d5dc7b042ee60e617fbb22b.
KAFKA-992 followup: Fix zookeeper de-registration bug for controller and consumer; reviewed by Neha Narkhede
kafka-1010; Concurrency issue in getCluster() causes rebalance failure and dead consumer; patched by Sam Meder; reviewed by Jun Rao
kafka-992; follow-up patch; Double Check on Broker Registration to Avoid False NodeExist Exception; patched by Guozhang Wang; reviewed by Neha Narkhede and Jun Rao
kafka-649; patch v5; Cleanup log4j logging; patched by Guozhang Wang; reviewed by Jun Rao