Add support thrift TCompactProtocol in ThriftConverter

[gzm55]

Hi,

In many general cases, compact protocol bytes in lzo-block file can save 10%~15% size than binary protocol bytes, but the ThriftConverter can't choose other protocol factory than TBinaryProtocol.Factory when serialize() or deserialize().

Can we add two optional parameters,

• first is to set a TProtocolFactory class name, used as output protocol when calling serialize();
• second is to enable detecting the protocol via TProtocolUtil.guessProtocolFactory() when calling deserialize().

if neither is set, all behaviors of previous codes (MR/pig/hive, etc.) should be preserved.