Merge remote-tracking branch 'jey/hadoop-agnostic'

assembly/pom.xml

bagel/pom.xml

bin/compute-classpath.cmd

bin/compute-classpath.sh

core/pom.xml

...op1/scala/org/apache/hadoop/mapred/HadoopMapRedUtil.scala

...ala/org/apache/hadoop/mapreduce/HadoopMapReduceUtil.scala

core/src/hadoop1/scala/spark/deploy/SparkHadoopUtil.scala

...ala/org/apache/hadoop/mapreduce/HadoopMapReduceUtil.scala

...op2/scala/org/apache/hadoop/mapred/HadoopMapRedUtil.scala

...cala/org/apache/hadoop/mapred/SparkHadoopMapRedUtil.scala

...rg/apache/hadoop/mapreduce/SparkHadoopMapReduceUtil.scala

core/src/main/scala/spark/PairRDDFunctions.scala

core/src/main/scala/spark/SparkContext.scala

core/src/main/scala/spark/SparkEnv.scala

core/src/main/scala/spark/SparkHadoopWriter.scala

core/src/main/scala/spark/Utils.scala

core/src/main/scala/spark/deploy/SparkHadoopUtil.scala

...main/scala/spark/executor/StandaloneExecutorBackend.scala

core/src/main/scala/spark/rdd/CheckpointRDD.scala