U.S. home starts hit 17-year high in July Tuesday August 19, 5:01 pm ET By Eric Burroughs (Updates with market close)NEW YORK, Aug 19 (Reuters) - U.S. home builders cranked up new construction to a 17-year high in July as quickly rising mortgage rates prompted consumers to buy sooner rather than later, a report showed on Tuesday, the latest sign of the economy's brightening outlook. In a separate report, the University of Michigan's survey showed consumer sentiment dipped during the first half of August as Americans remain worried about job security. Sentiment has essentially remained flat for three months after...