add class info to print information of the net
implemented cccp layer
add from_file filler and from_binary filler
print mean value of a blob
revised class info
add mean_train_loss info monitor
Merge branch 'cccp' into dev
Merge branch 'info' into dev
do scaling on test time
add mean on test time and mean on train time flag for debugging
Merge branch 'dropout' into dev
Merge branch 'filler' into dev
replace leveldb with lmdb
correct an error