FLUME-2492. Flume's Kafka Source doesn't account time correctly

(Gwen Shapira via Hari)
FLUME-2479. Kafka property auto.commit.enable is incorrect for KafkaSource.

(Gwen Shapira via Hari)
FLUME-2479. Adding new test files.

(Gwen Shapira via Hari)
Merge remote-tracking branch 'remotes/origin/trunk' into trunk