Merge branch 'release/0.4.4' into develop
Use new cpp client and server 0.5
Merge pull request #1 from unnonouno/cpp-new-client

Cpp new client
Regenerate servers/clients
remove pficommon dependency and regenerate
Remove checking jubatus_util

package config contains jubatus_util libraries.
Merge pull request #2 from jubatus/remove_check_util

Remove checking jubatus_util in wscript
regenerate servers/clients
Use JUBA_MEMBER
Bump to version 0.5.0
Regenerate files
Merge branch 'release/0.5.0'