Check and fix cudnn engine for concat and slice layer
Check and fix cudnn engine for concat and slice layer

kaiping/incubator-singa,nusdbsystem/incubator-singa,nusdbsystem/incubator-singa,ijingo/incubator-singa,kaiping/incubator-singa,nudles/incubator-singa,nusdbsystem/incubator-singa,apache/incubator-singa,wangsheng1001/incubator-singa,wangsheng1001/incubator-singa,nudles/incubator-singa,nudles/incubator-singa,kaiping/incubator-singa,ijingo/incubator-singa,kaiping/incubator-singa,apache/incubator-singa,wangsheng1001/incubator-singa,nudles/incubator-singa,apache/incubator-singa,nusdbsystem/incubator-singa,ijingo/incubator-singa,ijingo/incubator-singa,apache/incubator-singa,ijingo/incubator-singa,apache/incubator-singa,wangsheng1001/incubator-singa,nusdbsystem/incubator-singa,nudles/incubator-singa,wangsheng1001/incubator-singa,kaiping/incubator-singa