* Fix CPPLint errors

* Fix CPPLint errors in sequence2batch

* Fix compilation

* Fix LSTM op and GRU op

* Fix LSTMP op

* Fix more cpplint errors in operators/math

* Address Code review feedback

* modify roi pool with lod and expose ROI Pooling into Python API

* make lod code brief

* make doc more clearly

* make doc more clearly

* Some changes for Adam profiling

* Adam optimization: initial Eigen optimization

* Eigen Adam: flavour of adam can be chosen

* Eigen Adam used for CPU by default. Plain Adam used for GPU

* Eigen Adam: missing call to the Eigen functor added

* Eigen Adam: revert changes in benchmarks

* Eigen Adam: typo corrected

* Fix CPPLint issue in test_engine

* Fix CPPLint errors in operators/math

* Fix compilation

* Fix more CPPLint issues

* Fix more CPPLint issues

* Fix more CPPLint issues

* Fix CPPLint issues in operators/math and operators/reader

stride should be int64_t, not int

* remove share lod; it has already been performed in infershape

* slightly release test bound of test_image_classification