Fix libtensorflow breakage.

Updates the tar.gz structure, from:

-r-xr-xr-x 0/0            5976 1999-12-31 16:00 ./include/tensorflow/c/ctstring.h
-r-xr-xr-x 0/0           13505 1999-12-31 16:00 ./include/tensorflow/c/ctstring_internal.h

to:

-r-xr-xr-x 0/0            5976 1999-12-31 16:00 ./include/tensorflow/core/platform/ctstring.h
-r-xr-xr-x 0/0           13505 1999-12-31 16:00 ./include/tensorflow/core/platform/ctstring_internal.h

which is expected for tf_tstring.h.

PiperOrigin-RevId: 319142838
Change-Id: I3225e4f8f3618d1974337e7a729b32f00ffe85be

tensorflow/tools/lib_package/BUILD

@@ -73,7 +73,8 @@ pkg_tar(
     srcs = [
         "//tensorflow/c:headers",
     ],
-    package_dir = "include/tensorflow/c",
+    package_dir = "include/",
+    strip_prefix = "/",
     # Mark as "manual" till
     # https://github.com/bazelbuild/bazel/issues/2352
     # and https://github.com/bazelbuild/bazel/issues/1580