Add file locking to save
Update lock-type of save in jenerator
Merge branch 'develop' into flocking_save
Fix format of bit_vector_ranking.cpp

Insert a space to left-side of '<'
Remove xxx_server.hpp
Save index
Write test for nearest neighbor
Fix unit test for serialization method of column_table
Add daemon option
Ignore SIGHUP with --daemon specified
Update message
Remove unlock
Show warning if log output is tty in daemon mode
Change daemonize timing after zookeeper started
Functionize daemonization
Add daemon mode to jubaproxy
Fix typo
Add C++ RPC client test: fixes #341
Add get_connected_host_and_port to lock_service and output log when connected to ZooKeeper
Changed log output position