Fix DataTransFunc

Move check_nan_inf to operator

fix inference build on mac

fix nightly build and build script error

overlap send ops and backward ops

fix inference_lib_dist deps

* fix develop build issue

* fix google style

* cpplint check only fluid

Fix test to use less gpu memory

speedup vInvSqrt vLogqp vTanh with mklml

add fluid_guide

fix typo in docker_install_cn.rst

paddle inference interface implementation