By Martin Baccardax Macy’s, which has been under activists’ pressure to spin-off its digital sales division, blasted Wall Street earnings forecasts and boosted its holiday quarter dividend by 5%. Macy’s (M) – Get Macy’s Inc Report posted stronger-than-expected fourth quarter earnings Tuesday, while boosting its dividend and share buyback plans, as the department store bellwether continues its spectacular turnaround under CEO Jeff Gennette. Macy’s said adjusted earnings for the three months ending in January, the group’s fiscal fourth quarter, came in at $2.45 per share, up more than 200% from …