[SPARK-2376][SQL] Selecting list values inside nested JSON objects raises java.lang.IllegalArgumentException

JIRA: https://issues.apache.org/jira/browse/SPARK-2376

Author: Yin Huai <huai@cse.ohio-state.edu>

Closes #1320 from yhuai/SPARK-2376 and squashes the following commits:

0107417 [Yin Huai] Merge remote-tracking branch 'upstream/master' into SPARK-2376
480803d [Yin Huai] Correctly handling JSON arrays in PySpark.