setORF: if no stop codon found extend reading frame to all the way to the end.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
getStopCodon: return last 3 in-frame chars from CDS

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
mark non canonical site if cds length is not a multiple of 3

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>