* add prepare data and model script, modified corresponding docs:development_android and development_android_GPU

* Add verified multi-threading supported gemv_trans_mx1

* add comments for alloc and free

* optimize reduction progress of gemv_trans_mx1

* add macro for gemv_trans_mx1

* Fix multi-threadings incorrectnesss of armv7 neon gemv_trans_mx1

* add test_gemm_accuracy