add new function
 .
 compile passed
 .
 add new file
 move pyhon-gflags to third-party
 .
 remove pyo file
 add tools for split data for train mpi
 .
 .
 .
 fortmp
 fixbug
 at least loss function is descent
 fixbug in distenv
 .
 save model
 fixbug a small bug
refactor code