Changed variable name form ***Time to ***Duration to keep things consistent.

streaming/src/main/scala/spark/streaming/Checkpoint.scala

streaming/src/main/scala/spark/streaming/DStream.scala

streaming/src/main/scala/spark/streaming/Duration.scala

...src/main/scala/spark/streaming/PairDStreamFunctions.scala

streaming/src/main/scala/spark/streaming/Scheduler.scala

...ing/src/main/scala/spark/streaming/StreamingContext.scala

streaming/src/main/scala/spark/streaming/Time.scala

...main/scala/spark/streaming/dstream/CoGroupedDStream.scala

.../main/scala/spark/streaming/dstream/FilteredDStream.scala

.../scala/spark/streaming/dstream/FlatMapValuedDStream.scala

...ain/scala/spark/streaming/dstream/FlatMappedDStream.scala

...c/main/scala/spark/streaming/dstream/ForEachDStream.scala

...c/main/scala/spark/streaming/dstream/GlommedDStream.scala

...src/main/scala/spark/streaming/dstream/InputDStream.scala

...scala/spark/streaming/dstream/MapPartitionedDStream.scala

...main/scala/spark/streaming/dstream/MapValuedDStream.scala

...rc/main/scala/spark/streaming/dstream/MappedDStream.scala

...cala/spark/streaming/dstream/ReducedWindowedDStream.scala

.../main/scala/spark/streaming/dstream/ShuffledDStream.scala

...src/main/scala/spark/streaming/dstream/StateDStream.scala