Renamed "splits" to "partitions"

bagel/src/main/scala/spark/bagel/Bagel.scala

...c/main/scala/spark/bagel/examples/WikipediaPageRank.scala

...la/spark/bagel/examples/WikipediaPageRankStandalone.scala

core/src/main/scala/spark/CacheManager.scala

core/src/main/scala/spark/DoubleRDDFunctions.scala

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

core/src/main/scala/spark/Partition.scala

core/src/main/scala/spark/RDD.scala

core/src/main/scala/spark/RDDCheckpointData.scala

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

core/src/main/scala/spark/api/java/JavaDoubleRDD.scala

core/src/main/scala/spark/api/java/JavaPairRDD.scala

core/src/main/scala/spark/api/java/JavaRDD.scala

core/src/main/scala/spark/api/java/JavaRDDLike.scala

core/src/main/scala/spark/api/python/PythonRDD.scala

.../main/scala/spark/partial/ApproximateActionListener.scala

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

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

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

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