[2/2] spark git commit: [SPARK-7927] whitespace fixes for core.

[SPARK-7927] whitespace fixes for core. So we can enable a whitespace enforcement rule in the style checker to save code review time. Author: Reynold Xin Closes #6473 from rxin/whitespace-core and squashes the following commits: 058195d [Reynold Xin] Fixed tests. fce11e9 [Reynold Xin] [SPARK-

[2/2] spark git commit: [SPARK-7927] whitespace fixes for core.

[SPARK-7927] whitespace fixes for core. So we can enable a whitespace enforcement rule in the style checker to save code review time. Author: Reynold Xin Closes #6473 from rxin/whitespace-core and squashes the following commits: 058195d [Reynold Xin] Fixed tests. fce11e9 [Reynold Xin] [SPARK-