… from Paddle2.0 (#4908)

* [OP] Enhance Lite lookup table & grid sampler ops with new attributes from Paddle. test=develop

* ref: use template on config

* ref: remove redundent elementwise compute

* ref: i32add support arm broadcast now

* Update affine_grid to adapt for Paddle2.0 test=develop

* rm unused tmp var test=develop

* fix test bug test=develop

* add init output_data befor basic_gemm, rm malloc test=develop

* fix int8 m=1 sgemv error and small size in 2x2s2pooling compute error. test=develop

* fix build error. test=develop

…mv7 armlinux boards (#4952)

test=develop

* Fix infering shape error in compare op, test=develop

* Update gather op to adapt for Paddle2.0 test=develop

* add .gitmodules test=develop

* unify  gather kernel about host/x86/arm test=develop

* add axis null test, add test sample number test=develop

* fix third-party/protobuf-host/ bug test=develop

* donot test xpu npu now test=develop

* rm unused variable test=develop

* rm x86 test file,opencl xpu option test=develop

* fix int32 bug test=develop

* rm gather test in CMakeLists.txt  test=developp

* test=develop

* test=develop

* update write_output. test=develop
* fix v8 compute error. test=develop

* [LITE][BM] support save bmodel and umodel, test=develop

* [LITE][BM] support hard swish,test=develop

#4949)

* [X86] add avx2 for dwconv, test=develop

* [X86] remove omp, test=develop
* remove comments, test=develop

* [X86] disable avx2 by default, test=develop

* Enable AVX by default, test=develop

#4959)

* [OPENCL] Enhance tune api & Add precision api for opencl. test=develop

* enum name for CL_PRECISION and CL_TUNE. test=develop

…rcnn, test=develop (#4965)

* fix m=1 sgemm v7 bus error. test=develop

* addd m=1 int8 sgemv support. test=develop

* enhence box_coder to support fastrcnn add maskrcnn. test=develop

…ck_list' and 'unit_test_filter_type' instead (#4981)

test=develop

…rate loading model period (#4934)

* fix v8 compute error. test=develop

* fix run error in 625. test=develop

* add a35 implment in a53. test=develop

* add arch-a35. test=develop