message: Make tf_cc_test compilable by default for Android
  This change adjusts the build options for tf_cc_test targets so that
  they can be built for Android devices by default. Many targets will
  still need additional options on a per-target basis.
  Android requires that executables be compiled with `-pie`.
diff: @@ -589,7 +589,15 @@ def tf_cc_test(name,
  name="%s%s" % (name, suffix),
  srcs=srcs + tf_binary_additional_srcs(),
  copts=tf_copts() + extra_copts,
  - linkopts=["-lpthread", "-lm"] + linkopts + _rpath_linkopts(name),
  + linkopts=select({
  + "//tensorflow:android": [
  + "-pie",
  + ],
  + "//conditions:default": [
  + "-lpthread",
  + "-lm"
  + ],
  + }) + linkopts + _rpath_linkopts(name),
  deps=deps + if_mkl(
  [
  "//third_party/mkl:intel_binary_blob",
  