Merge remote-tracking branch 'apache/master' into conf2

core/pom.xml

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

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

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

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

...scala/org/apache/spark/util/SerializableHyperLogLog.scala

core/src/test/scala/org/apache/spark/JavaAPISuite.java

...st/scala/org/apache/spark/rdd/PairRDDFunctionsSuite.scala

core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala

...ala/org/apache/spark/serializer/KryoSerializerSuite.scala

pom.xml

project/SparkBuild.scala