#37 ASN.1 NULL problems

[Michal Budzyn]

There are some issues considering the ASN.1 NULL encoding:
1.Generated class doesn't have setter/getter methods.
2.Optional clause is not respected, value is always encoded.
3.“05 00”H encoding is always. Implicit and long tags are not considered.

TestNull ::= SEQUENCE
{
boolValue BOOLEAN,
nullVall [33] NULL OPTIONAL
}