FREEDOM BROKERS   When notorious killers and drug lords break out of a maximum security penitentiary, it soon becomes clear that these weren't escapes; they were highly organized rescues. A covert organization is selling prison "insurance," promising to bust criminals out of jail for a hefty price. With the justice system in shambles, the President is on the verge of declaring martial law--until Mack Bolan steps in.  Undercover as a rival insurance salesman, Bolan hires his own team of con men. Establishing himself as a major player in the ''criminal relocation'' business should bring him face-to-face with the operation's kingpin. He'll need more than his war skills to destroy this ruthless businessman. But when the Executioner sets up shop, he won't back down until he obliterates the competition.