Review comments on the PR for scala 2.10 migration.

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

...rc/main/scala/org/apache/spark/api/java/JavaPairRDD.scala

...rc/main/scala/org/apache/spark/api/java/JavaRDDLike.scala

...in/scala/org/apache/spark/api/java/JavaSparkContext.scala

.../org/apache/spark/api/java/function/FlatMapFunction.scala

...rc/main/scala/org/apache/spark/api/python/PythonRDD.scala

...rc/main/scala/org/apache/spark/deploy/ExecutorState.scala

...rc/main/scala/org/apache/spark/deploy/client/Client.scala

core/src/main/scala/org/apache/spark/rdd/CartesianRDD.scala

core/src/main/scala/org/apache/spark/rdd/EmptyRDD.scala

...rc/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala

.../main/scala/org/apache/spark/scheduler/TaskLocality.scala

...rc/main/scala/org/apache/spark/storage/BlockManager.scala

project/SparkBuild.scala

...src/main/scala/org/apache/spark/repl/SparkExprTyper.scala