…roblem

Pick up newer version of dependency with fix for SPARK-2018.  The update involved patching the ning/compress LZF library to handle big endian systems correctly.

Credit goes to gireeshpunathil for diagnosing the problem, and cowtowncoder for fixing it.

Spark tests run clean for me.

Author: Tim Ellison <t.p.ellison@gmail.com>

Closes #6077 from tellison/UpgradeLZF and squashes the following commits:

ad8d4ef [Tim Ellison] [SPARK-2018] [CORE] Upgrade LZF library to fix endian serialization problem