Also, for completeness, correct the listing of callee-save registers in callable return for x86 & x86_64. original commit: 276f8da076a5692457226ea6ad74ba5f0e71cc06
7.ss, scheme.1.in, comments of many files original commit: 06f858f9a505b9d6fb6ca1ac97234927cb2dc641
original commit: 47a210c15c63ba9677852269447bd2f2598b51fe