* Add quad transform.

* Fix some syntax error.

* Fix CUDA kernel launch configure.

* Generalize geometry channels.

* Rename QuadTransform to PolygonRestore.

* Rename op.

* Rename op and fix computation.

* Modify CMakeLists.txt for box_restore op.

* Refine code:
1. rename op
2. uncomment unitest on GPU

* add create lodtensor from list

* modify book example

* scripts: clean bash scripts.

* Fix build related documents.

* unify UpsamplingBilinear2d interface specification

* unify UpsamplingBilinear2d interface specification

* fix name conventions

* small fix about computation order

fix rename var

add inference api demo impl

Change optimizer to old paddle style

Disable unstable test

CustomReader

remove old fluid cluster benchmark scripts

* fix range in data flow analysis

Improve doc generation speed

Remove cpplint in cmake

Blas optimized elementwise_add forward and backward passes

Simplify label_semantic_roles book example using new LoDTensor API

Modify understand sentiment example using new LoDTensor API

Simplify Machine Translation demo by using Trainer API

Fix rst format issues in several files.

* Update label role implementation to use new API

* Try trainable embedding layer

* Fix feed order

* Add infer call