Enhancement, TLV equals&hashcode

[nlucian]

It would be nice updating the TLV class with the equals&hashcode contract. Would you approve such a change please? There are lookup cases where it's nice leveraging the power of a hash structure instead of o(n) lookup (and without extra wrappers)

@Override
public boolean equals(Object obj) {
    if (!(obj instanceof TLV)) {
        return false;
    }

    TLV targetTlv = (TLV) obj;

    if (getTagBytes().length != targetTlv.getTagBytes().length) {
        return false;
    }

    return Arrays.equals(getTagBytes(), targetTlv.getTagBytes());
}

@Override
public int hashCode() {
    return this.getTag().hashCode();
}

[nlucian]

Not needed anymore, but anyway it's a good idea having the contract added :)