Reuters: Exporters, livestock feeders and ethanol makers are going through the U.S. corn stockpile faster than farmers can grow the crops, the government said on Friday. Despite record crops in two of the past three years and another record within reach this year, the Agriculture Department estimated the corn carryover will shrink to the lowest level since 2006/07. In a monthly look at crop supply and usage, USDA estimated 1.478 billion bushels of corn will be in U.S. bins on August 31, …