trival change to review unneeded error logging since an exception is already thrown to the caller
kafka-938; High CPU usage when more or less idle; patched by Sam Meder; reviewed by Jun Rao
Merge branch '0.8' of https://git-wip-us.apache.org/repos/asf/kafka into 0.8
kafka-940; Scala match error in javaapi.Implicits; patched by Joel Koshy; reviewed by Jun Rao
kafka-937; ConsumerFetcherThread can deadlock; patched by Jun Rao; reviewed by Joel Koshy
Merge branch '0.8' of https://git-wip-us.apache.org/repos/asf/kafka into 0.8