do not expose mixer RPC APIs when running in stanadlone mode (fix #798)
do not expose mixer RPC APIs when running in stanadlone mode (fix #798)

jubatus/jubatus,rimms/jubatus,Asuka52/jubatus,gintenlabo/jubatus,rimms/jubatus,jubatus/jubatus,mathn/jubatus,elkingtonmcb/jubatus,gintenlabo/jubatus,kmaehashi/jubatus,Asuka52/jubatus,kmaehashi/jubatus,elkingtonmcb/jubatus,jubatus/jubatus,mathn/jubatus,roselleebarle04/jubatus,roselleebarle04/jubatus