kafka-891; NullPointerException in ConsoleConsumer; patched by Colin B.; reviewed by Neha Narkhede and Jun Rao
Fixed compilation errors and most of the warnings for 2.10
Fixed tests for 2.10
Added assembly and moved sbt-launch.jar to root dir to avoid it being part of assembly jar
upgrade sbt-idea plugin to 1.4.0
add scala version 2.10.2-RC1
remove com.github.sgroschupf.zkclient of core/build.sbt
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Merge remote-tracking branch 'origin/trunk' into trunk