AUSTIN -- Texas ranchers suffering from the worst one-year drought on record can continue to count on a hay transportation waiver to help feed their dwindling herds. At the request of Agriculture Commissioner Todd Staples, Gov. Rick Perry extended the waiver until Thursday, Sept. 1, with the possibility of further extensions every 30 days as long as the drought continues. The waiver relaxes certain restrictions and permitting requirements in order to expedite the transport of hay. . . .