Fix pack interface for column_table
Fix pack interface for column_table

kmaehashi/jubatus_core,kumagi/jubatus_core,kmaehashi/jubatus_core,kumagi/jubatus_core,rimms/jubatus_core,kmaehashi/jubatus_core,rimms/jubatus_core,gintenlabo/jubatus_core,gintenlabo/jubatus_core,rimms/jubatus_core,kmaehashi/jubatus_core,kumagi/jubatus_core,rimms/jubatus_core,gintenlabo/jubatus_core,gintenlabo/jubatus_core,kumagi/jubatus_core