Intermediate version: converting to use stack allocation for `&` arguments and results in a callable, only x86_64 and x86 updated so far. original commit: 645e1ec56376548cdef1849ba7ff2f56a926af45
7.ss, scheme.1.in, comments of many files original commit: 06f858f9a505b9d6fb6ca1ac97234927cb2dc641
original commit: 47a210c15c63ba9677852269447bd2f2598b51fe