By Bianca Flowers (Reuters) -Caterpillar Inc said on Tuesday it would move its global headquarters to a Dallas suburb from the construction equipment maker’s century-long home in Illinois. Caterpillar did not say why it was moving the headquarters to Irving, Texas, from Deerfield, Illinois, a Chicago suburb. It said in an emailed statement it did not seek or receive incentives for the relocation. The company is the latest big manufacturer to exit Illinois. Last month, aerospace giant Boeing announced it would move its corporate headquarters from Chicago to Arlington, Virginia. Texas, meanwhile…