Replace {} to + in cmake regex match

Change the PADDLE_VERSION in develop branch to latest

* use -rpath to fix libmklml_intel.so not found

* only remain $ORIGIN/../libs in rpath of core.so

* test

* test

* add rpath of libmkldnn.so.0

* check return value of os.system

* remove check return value of patchelf

This reverts commit 36d9e4be.

* add note when import core.so error

* update

* make transpiler test reliable

* add more

* follow comments

* Add anchor generator operator for Faster-RCNN.
* Add unittest testing.
* Add Python API.

This is part of big move of v2 codes to legacy sub dir.

* memory init

* add env

* refine anounce

* Add check for Nan

* Debug

* Add env for cc_test

* Add env for py_test and nv_test

* Remove py_test env

* Add env for py_test

* serial test_recognize_digits

* Test FLAGS_init_allocated_mem function for unit test

* Init allocated mem for op unit test

* Add env for all unit test

This reverts commit bc28cf61.

input vars will NOT take into account

* Fix average_accumulate_op for parallel executor.

* Fix model average on multi-GPUs.

* Fix mean iou op.

* Fix crop layer test.

* Fix unitest

* fix unitest.

* Add fill_zeros_array op. This op is used for zero-filling an LoDTensorArray.

* merge fill_zeros_array_op with fill_zeros_like_op

* add unit_test for fill_zeros_like for array