-. add Fast-Serialization Library
-. change value serializer from java built-in serializer to fast serialization and snappy for compression.

 run SerializerTest:

 title=binary builtin warm-up : 3557
 title=binary builtin warm-up : 92723
 title=binary builtin small : 34618
 title=binary builtin large : 560310
 title=fst warm-up : 43350
 title=fst warm-up : 48334
 title=fst small : 10408
 title=fst large : 203779
 title=fst snappy warm-up : 24876
 title=fst snappy warm-up : 1519
 title=fst snappy small : 3433
 title=fst snappy large : 84232
 title=binary snappy warm-up : 384
 title=binary snappy warm-up : 10462
 title=binary snappy small : 16265
 title=binary snappy large : 303778