 ABC News, I'm Sherry Preston. As Hurricane Beryl plows toward Jamaica, people along the Texas Gulf Coast are getting ready. Here's ABC's Jim Ryan. Computer models point to a tropical storm, Beryl, making landfall early next week in Mexico. For South Texas, that means possible flooding. We've got 18-liter loads of sandbags as we speak en route to Clever County. County Executive Rudy Madrid says two special buildings are stocked up and ready for evacuees. Our FEMA domes have been on alert now. The