message: [kythe] make verify-kythe-extraction.sh executable
diff: set -e
  -KYTHE_DIRNAME="kythe-${KYTHE_VERSION}"
  -KYTHE_DIR_ABS="$(readlink -f "kythe-bin/${KYTHE_DIRNAME}")"
  -
  # Verify that Verilog Kythe indexer produces the expected Kythe indexing facts.
  # Note: verifier tool path assumes it came with the release pre-built.
  +KYTHE_DIRNAME="kythe-${KYTHE_VERSION}"
  +KYTHE_DIR_ABS="$(readlink -f "kythe-bin/${KYTHE_DIRNAME}")"
  bazel test --test_arg="$KYTHE_DIR_ABS/tools/verifier" verilog/tools/kythe:verification_test
  