modify to pass job annotation by localProperties and use daeamon thread to do joblogger's work
Merge branch 'master' of https://github.com/mesos/spark
delete test code for joblogger in SparkContext
not check return value of eventQueue.take
modify sparklister function interface according to comments
edit according to comments
some format modification
small format modification
small modify in DAGScheduler
Merge pull request #644 from shimingfei/joblogger

add Joblogger to Spark (on new Spark code)