Function concat_atom8 

pub fn concat_atom8(
    s1: &str,
    s2: &str,
    s3: &str,
    s4: &str,
    s5: &str,
    s6: &str,
    s7: &str,
    s8: &str,
) -> Atom

Creates an Atom as a result of concatenating 8 string slices.