[SPARK-4397][Core] Change the 'since' value of '@deprecated' to '1.3.0'

As #3262 wasn't merged to branch 1.2, the `since` value of `deprecated` should be '1.3.0'.

Author: zsxwing <zsxwing@gmail.com>

Closes #3573 from zsxwing/SPARK-4397-version and squashes the following commits:

1daa03c [zsxwing] Change the 'since' value to '1.3.0'
[SPARK-4710] [mllib] Eliminate MLlib compilation warnings

Renamed StreamingKMeans to StreamingKMeansExample to avoid warning about name conflict with StreamingKMeans class.

Added import to DecisionTreeRunner to eliminate warning.

CC: mengxr

Author: Joseph K. Bradley <joseph@databricks.com>

Closes #3568 from jkbradley/ml-compilation-warnings and squashes the following commits:

64d6bc4 [Joseph K. Bradley] Updated DecisionTreeRunner.scala and StreamingKMeans.scala to eliminate compilation warnings, including renaming StreamingKMeans to StreamingKMeansExample.