New Delhi, Sept. 21 -- It could be an early Diwali for consumer goods companies. The finance minister's tax bonanza for India Inc. could bode well for fast-moving consumer goods (FMCG) firms struggling to deal with the slump in rural and urban demand. With the reduction in tax rates, companies could now increase consumer and trade promotions, and ramp-up marketing spends to stimulate demand during the ongoing festive season, said market analysts....