Function save_stacktrace

Quick-saving the stack trace in an internal form on the heap. Note that c_p->ftrace will point to a cons cell which holds the given args and the saved data (encoded as a bignum). There is an issue with line number information. Line number information is associated with the address *before* an operation that may fail or be stored stored on the stack. But continuation pointers point after its call

(
    process: &RcProcess,
    exc: &mut Exception,
    /*bif_mfa: &MFA,*/ mut args: Term,
)