Criminal procedure: sentencing; resentencing upon petition of certain prisoners; provide process for. Amends secs. 12 & 25, ch. IX of 1927 PA 175 (MCL 769.12 & 769.25) & adds secs. 27a, 27b, 27c, 27d, 27e, 27f, 27g & 27h to ch. IX.