Function cur_add_func 

pub fn cur_add_func(
    nam: &str,
    shf_name: &str,
    shf_flags: i32,
    names: &mut Vec<String>,
    progs: &mut Vec<wcfunc>,
    hlen: &mut i32,
    tlen: &mut i32,
    what: i32,
) -> i32

Port of cur_add_func(char *nam, Shfunc shf, LinkList names, LinkList progs, int *hlen, int *tlen, int what) from Src/parse.c:3489. Adds a shfunc to the in-build dump progs+names lists. Stub: Eprog for the function body isn’t yet wired through shfunc.funcdef to be serializable here.