SPARK-1621 Upgrade Chill to 0.3.6

It registers more Scala classes, including things like Ranges that we had to register manually before. See https://github.com/twitter/chill/releases for Chill's change log.

Author: Matei Zaharia <matei@databricks.com>

Closes #543 from mateiz/chill-0.3.6 and squashes the following commits:

a1dc5e0 [Matei Zaharia] Upgrade Chill to 0.3.6 and remove our special registration of Ranges