Add reduce op#4086

Merged

guoshengCS merged 9 commits intoPaddlePaddle:developfrom

guoshengCS:add-ReduceOp

Sep 28, 2017

Commits on Sep 26, 2017

Refine reduce_op, follow comments and remove ReduceGradEigenFreeKernel
guoshengCS
committed

Commits on Sep 27, 2017

Merge branch 'develop' of https://github.com/PaddlePaddle/paddle into add-ReduceOp
guoshengCS
committed

Commits on Sep 28, 2017

Merge branch 'develop' of https://github.com/PaddlePaddle/paddle into add-ReduceOp
guoshengCS
committed
Adapt reduce_op according to up-to-date dev
guoshengCS
committed