After Welcoming Evacuees, Houston Handles Spike in Crime Population Swell Fills Apartments and Strains Police Force By Sylvia Moreno Washington Post Staff Writer Monday, February 6, 2006; Page A03 HOUSTON -- The southwest corner of this city is one sprawling low-rise apartment complex after the next, a once-hot real estate area that died with the 1980s oil bust only to be reborn in the '90s as a low-income, high-crime neighborhood. Now it's Katrina turf. New Tony's Express, a neighborhood convenience store, is sold out of T-shirts and caps stenciled with the numbers 504, 985 and 337 -- the area codes...