Tough JewsBy: Rich Cohen In an L. A. delicatessen, a group of Brooklyn natives gets together to discuss basketball, boxing, the weather back east, and the Jewish gangsters of yesteryear. Meyer Lansky. Bugsy Siegel. Louis Lepke, the self effacing mastermind of Murder, Inc. Red Levine, the Orthodox hit man who refused to kill on the Sabbath. Abe "Kid Twist" Reles, who looked like a mama's boy but once buried a rival alive. These are just some of the vibrant,