PARQUET-133: Upgrade snappy-java to 1.1.1.6

Upgrade snappy-java to 1.1.1.6 (the latest vesrion), since 1.0.5 is no longer maintained in https://github.com/xerial/snappy-java, and 1.1.1.6 supports broader platforms including PowerPC, IBM-AIX 6.4, SunOS, etc. And also it has a better native coding loading mechanism (allowing to use snappy-java from multiple class loaders)