Function kmer_lookup::make_kmer_lookup_single

pub fn make_kmer_lookup_single<K: Kmer>(
    dv: &[DnaString], 
    x: &mut Vec<(K, i32, i32)>
)

Given a vector of DnaStrings dv, create a sorted vector whose entries are (kmer, e, estart), where the kmer starts at position estart on dv[e].