* refactor register mechanism, current so size: 1.20MB. test=develop

* fix KernelRegistry::Global().Create. test=develop

* fix cpplint errors. test=develop

* fix test_subgraph_pass bug. test=develop

* register kernel with target,precision,datalayout combination. test=develop

* fix test_paddle_api no op found bug. test=develop

* enhance comment

* fix lite/kernels/arm/elementwise_compute_test.cc. test=develop

* fix code style

* revert format of unchanged files. test=develop

* fix code format according to cpplint 1.5.1. test=develop

* remove redundant include header. test=develop

* add op affine_grid. test=develop

* fix concatt axis < 0 errorr,ttest=develop

* fix format. test=develop

* [LITE][PASS] Add pass for removing uesless reshape2 / squeeze2. test=develop

* [LITE][PROFILER] Fix unit test segfault when profiler on. test=develop

[LITE][OPENCL] Add local work size, global work size for opencl profiler; fix bug for variable inference pass. test=develop (#3741)

* [LITE][PROFILE] Fix summary info for profiler. test=develop

* reduce .so size. test=develop

* compile all targets when LITE_ON_TINY_PUBLISH=OFF

* unordered_map is more convenient when key is customized class

* test=develop

* reconstruct op_registry. test=develop

* remove function GetKernelOffset. test=develop

* add calltime/gops for summary. test=develop

* fix act case for kunk. test=develop

* [LITE][PROFILE] Enhance ARM CPU profiler with real backend kernel. test=develop

[LITE][OPENCL] Enhance Profiler for OpenCL with in/out/filter shape, macs/macs_ps, real backend kernel etc. (#3641)

* [LITE][OPENCL] Enhance Precision Profiler for OpenCL. test=develop

[LITE][XPU] 1. Add precision switch(int16/int31) in XPUMultiEncoderOp; 2. Fix identity_dropout_eliminate_pass, |AttrType| of 'is_test' in OpDesc can be INT or BOOLEAN; 3. Enhance |__xpu__multi_encoder_fuse_pass|; (#3596)

* [LITE][XPU] Add precision switch(int16/int31) in XPUMultiEncoderOp

* [LITE][XPU] fix identity_dropout_eliminate_pass, |AttrType| of 'is_test' in OpDesc can be INT or BOOLEAN

* test=develop

* [LITE][XPU] suppress linkage error
test=develop

* [LITE][XPU] 1. Reorder |identity_dropout_eliminate_pass| before |__xpu__multi_encoder_fuse_pass|; 2. Enhance |__xpu__multi_encoder_fuse_pass|, it works well in more scenarios;
test=develop

* [LITE][XPU] Remove XPUConfig
test=develop

* test=develop, support WITH_TESTING=ON on windows

test=develop, modify the path of test_file in build_windows.bat

test=develop, modify the docment of windows compilation

test=develop, modify the document

* test=develop, modify the build_windows.bat

* add eltwise_activate_fuse. test=develop

* [LITE] Set high perf mode as default in mobile_light deme; Fix Precision Profiler caused by X86 header; Enhance profiler for opencl. test=develop

 fix reshape infer shape issue  
adaptive pool, 
support adaptive pool2,  
multi thread ok,   
optimize global pool, 
support faceboxes and behavior image, 
realize bm device info, 
multi device ok, 
support multi cards, 
support efficienet

* add interpolate type2 pass. test=develp

 [x86] [BUG FIX] Fix x86 kernels and fix the issue x86 compiling fails when `with_profiler=ON` #3478

* fix format, test=develop

* add some op infershape implement, test=develop

* add reshape infershape, test=develop

* fix depthwise_deconv error. test=develop

* fix format. test=develop

* add scale+relu/relu6/leakyrelu test=develop
* fix format， test=develop