message: TFE: Add missing srcs_version to BUILD file
diff: @@ -252,6 +252,7 @@ py_library(
  py_library(
  name = "tensor_node",
  srcs = ["tensor_node.py"],
  + srcs_version = "PY2AND3",
  visibility = ["//tensorflow:internal"],
  deps = [
  ":context",
  @@ -269,6 +270,7 @@ py_library(
  py_library(
  name = "backprop",
  srcs = ["backprop.py"],
  + srcs_version = "PY2AND3",
  visibility = ["//tensorflow:internal"],
  deps = [
  "//tensorflow/python:array_ops",
  