GIRAPH-476: SequenceFileVertexOutputFormat (nitay)
GIRAPH-474: Add an oprtion not to use direct byte buffers. (majakabiljo via ereisman)
Committing changelog for GIRAPH-474 (ereisman)
GIRAPH-478: Bring back jar-with-deps for giraph-hcatalog (nitay)
GIRAPH-453: Pure Hive I/O (nitay)