PEORIA, Ill. - Caterpillar Inc. will build a new small engine plant in Seguin, Texas, and move jobs there that are now at the company’s engine plant in Mossville. News about the plant in Seguin, a town of about 25,000 people located less than 30 miles east of San Antonio, came Thursday from the office of Texas Gov. Rick Perry. The plant, said a news release, will create more than 1,400 jobs and generate…