Nikkei touches 7-1/2 year high; weak Japan GDP offset by upbeat U.S. jobs

* Worse than expected Q3 GDP highlights economic woes * Weaker yen, US jobs data boosts exporters * Toyota set for 7th straight day of gains By Thomas Wilson TOKYO, Dec 8(Reuters) - Japanese stocks were steady on Friday as a downward revision in third quarter GDP figures balanced by hopes for exporters due to a weaker yen and optimism over the U.S. economy. The Nikkei benchmark was flat at 17,916.83 at 0141 GMT, after breaking through the 18,000 barrier to hit a fresh 7-1/2