The Jags have added veteran free agent safety Pierson Prioleau to the roster, signing him Wednesday and releasing QB Lester Ricard.  Prioleau has spent 10 years in the leauge, the last three with the Redskins.  Last season he played in 15 games, startng four and finishing the year with 38 tackles.  He has also spent time with the 49′ers, and Bills.  He comes to the Jags and will be back with former Skins and now Jags defensive coordinator Gregg Williams.  He will also give the Jags some depth at the safety spot.