* libguile/intrinsics.h:
* libguile/intrinsics.c (string_set_x): Change to take size_t and u32 as
args.
(allocate_words): Change to take size_t as arg.
* libguile/vm.c (expand_apply_argument): Rename from rest_arg_length,
and also handle the stack manipulation.
* libguile/vm-engine.c (expand-apply-argument): Update for intrinsic
change.
(call-scm-sz-u32): Rename from call-scm-u64-u64, as it matches its
uses and will compile better on 32-bit systems.
* module/system/vm/assembler.scm (define-scm-sz-u32-intrinsic):
(string-set!): Update for new instrinsic call inst.
* libguile/jit.c (compile_call_scm_sz_u32): Adapt.