A RASH OF forest fires whipped by strong winds continued to burn out of control after destroying more than 24,000 acres near the French Mediterranean coast. . . . A SMALL FIRE erupted Saturday in a Los Angeles subway tunnel under construction next to another tunnel destroyed by a major blaze in July. . . . EQUIPMENT FAILURE at a Commonwealth Edison station caused a major power outage on Chicago's West Side for the third time in the past three months. . . . TWO ADDITIONAL clients of Dr. David J. Acer, a deceased Florida dentist believed responsible for passing the AIDS virus to a patient, have tested positive for the disease, health officials say.