* [XPU] add batchnorm op bridge and unit test

test=develop

* fix DMLC_USE_GLOG

test=develop

* delete remaining opencl headers test=develop

* checkout specific commit for opencl headers test=develop

* add opencl headers by git clone test=develop

* add opencl headers by git clone test=develop

fix buf: model_optimize_tool can not compile preperly on mac environment (#2326)

* add mem opt option for high api ,test = develop

* fix is_lod params && test-performance ,test=develop

* fix model_opt_tool bug : judge WITH_MKL to choose whether to compile MKL test=develop

* Fix conv bn bug. test=develop

* Fix bug in pattern_matcher. test=develop

* add GPU_CL for test_net_benchmark.

* test compile

* fix mobile build error

Fix compiling bug in android_armv7_demo : cxx demo can not compile properly because demo' android version is different from that of library file (#2308)

link armv7 demo to android-23 to make sure the demo can compile properly
cxx demo can not compile properly because demo' android version is different from that of library file, we fix this bug by linking armv7 demo to android-23

Add 'inference' folder into build.lite.x86, 'inference' folder contains head files、library files and demo of x86 compiling (#2301)

Add inference folder into build.lite.x86, build.lite.x86/inference folder contains head files、library files and demo of x86 compiling

* alter the unit tests api for googlenet, resnet50, inceptionv4, mobilenetv1, mobilenetv2 and thier corresponding cmake, test=develop

* disable checks and correct some incorrect statement, test=develop

* [LOG] macro for vlog. test=develop

test=develop

* we can build x86 dynamic library by `build.sh x86`

remove dynamic library compiling from `ci_build.sh  build_test_server`

* Fix bug target for kHost and kARM not equal. test=develop

* Fix license. test=develop

test=develop

* add tanh op in x86 platform and its unittest, test=develop

* add gelu op on x86 platform and add its unittests, test=develop

* update depends for math_function for activation for gelu, test=develop

test=develop

* Add supporting for Huawei offical DDK
* Fix the param of graph op in NPU graph computing kernel

test=develop

* [XPU] add mul op bridge and unit test

test=develop

* use tmp tensor for transposed y

test=develop

test=develop

* Initial support for XPU
* Fix compiling errors of XPU
* Move XPU op kernel bridges from backends to kernels to fix deps order
* Change the namespace and directory of XPU bridges
* Add XPU SDK
* Fix header files and namespace of XPU SDK
* Add unit tests for relu and conv2d ops
* Restore the modification of paddle_api_test
* Supports simple model which contains only a relu layer
* Add compiling scripts for XPU
* Fix compiling errors of XPU
* Add comments for XPU LoadModel and BuildModel

* add shell file to automatically build and collect publish result test=develop
* modify API inference of model_optimize_tool and add option for tiny&full publish test=develop

Fix conv_bn fuser with no elemwise op added, Fix conv_elem with original conv with conv_bias (#2211)

* Fix conv_bn fuser with no elemwise op added. test=develop

* fix match not bug. test=develop

* Fix conv-bn pass. test=develop

* Fix conv-bn pass. test=develop

* Fix conv-bn pass. test=develop

* Fix conv-bn pass. test=develop

* Fix conv-bn pass. test=develop

* Fix conv-bn fuse pass. test=develop

* Fix conv-bn fuser consider the case: enable_int8=true without conv_bias. test=develop

* Fix back, consider enable_int8. test=develop

* Fix Bug for conv-bn quant pass. test=develop

* Fix conv-elemwise considering origin conv with conv_bias. test=develop

* Fix code format. test=develop

* simplify. test=develop

* simplify. test=develop

* Fix conv_elem. test=develop

build x86 dynamic library in ci_build.sh
./lite/tool/ci_build.sh build_test_server

* make inceptionv4, resnet50, googlenet can run on x86 paltform and fix the compare part in x86 unittests, test=develop

* fix googlenet tests for benchmark record, test=develop

* [framework][profile] fix profile dump bug when op is feed and fetch test=develop (sangoly)

* optimise conv 1x1 ,test=develop

* add test_performance test

* remove log in reshape, fix conv error when padding size=4, test=develop

* fix style, test=develop

* remove useless code, test=develop

* remove redundant model test file, test=develop

* change cluster to power_mode, test=develop

* fix build error, test=develop

* change cluster to power_mode, test=develop

* change opt_nb to use_optimize_nb, test=develop

* null, test=develop

* add gemv-int8 test, fix clang build error, test=develop

* fix gemv-int8 error when build with clang, test=develop

test=develop

* [python api] add armlinux supported and publish paddle-lite python lib & demo

* add cuda build
test=develop

* modify yolobox_cuda to support multiple runs test=develop

* fix: fix fc batch bug

* fix:fix fc bug;test=develop