Fixed batched softmax nodes for cnn
Fixed batched softmax nodes for cnn


Former-commit-id: 8f1cfc21d7a310f747479331d7f62b71a4bb389c
xunzhang/dynet,danielhers/dynet,chunyang-wen/dynet,shuheik/dynet,xunzhang/dynet,danielhers/dynet,clab/cnn,shuheik/dynet,clab/dynet,clab/dynet,clab/dynet,xunzhang/dynet,danielhers/dynet,shuheik/dynet,clab/cnn,danielhers/dynet,xunzhang/dynet,shuheik/dynet,clab/dynet,clab/cnn,clab/dynet,danielhers/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,clab/dynet,chunyang-wen/dynet,shuheik/dynet,shuheik/dynet,danielhers/dynet,chunyang-wen/dynet,chunyang-wen/dynet