[2/2] spark git commit: [SPARK-5658][SQL] Finalize DDL and write support APIs

[SPARK-5658][SQL] Finalize DDL and write support APIs https://issues.apache.org/jira/browse/SPARK-5658 Author: Yin Huai This patch had conflicts when merged, resolved by Committer: Michael Armbrust Closes #4446 from yhuai/writeSupportFollowup and squashes the following commits: f3a96f7 [Yin

[2/2] spark git commit: [SPARK-5658][SQL] Finalize DDL and write support APIs

[SPARK-5658][SQL] Finalize DDL and write support APIs https://issues.apache.org/jira/browse/SPARK-5658 Author: Yin Huai This patch had conflicts when merged, resolved by Committer: Michael Armbrust Closes #4446 from yhuai/writeSupportFollowup and squashes the following commits: f3a96f7 [Yin