Refine the pass builder and buildstrategy

Fix compiling with cuDNN v5.

Adding fused operator for ngraph 

* Split cichecks

test=develop

* feat(Anakin): expose anakin options to paddle cmake option

Expose ANAKIN_BUILD_FAT_BIN, ANAKIN_BUILD_CROSS_PLANTFORM to Paddle cmake option

test=develop

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fix prelu

* human readable memory warns test=develop

* update test=develop

* refine test=develop

* fix build test=develop

Refine lrn cpu forward

Lookup sparse table add test mode

sgd_op optimize selected rows do not enforce id < height

Fix num_threads settings in fast_pe

Revert "Softmax op optimization for inference "

test=develop

add self to author

test=develop

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Softmax op optimization for inference 

test=develop

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fix the nn.py example

* Support softmax return in softmax_with_cross_entropy

* Add test for return_softmax=False

test=develop

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speedup DetectPatterns

Density prior box operator for image detection model.

test=develop