Mumia Abu-Jamal, the onetime radio journalist, activist and convicted killer whose planned jailhouse commentaries were dropped by NPR after an outcry 17 years ago, is off of death row. However, he’s likely to stay in prison the rest of his life, without the possibility of parole. Abu-Jamal is now jailed at State Correctional Institution Mahanoy, west of Allentown in eastern Pennsylvania. Philadelphia’s district attorney, Seth Williams, said Dec. 7  the death penalty was a just punishment for killing a city policeman 30 years ago, but he wouldn’t prolong the legal struggle by asking again for execution. Twice the courts had ordered execution, and appeals saved him — to the relief of his partisans and to the outrage of those of Officer Daniel Faulkner.