fix bugs, add test and merging

I am not really sure how to write a test for this one.
I have added a python test that create nodes with the same nodeid and is
expected to raise an exception. But this only catch one possible
consequence, not all possible cases.
I will thihnk about it.... maybe create a map , insert many nodeIds and
check that sequence is as expected


On Sun, Jun 8, 2014 at 8:16 PM, Alexander Rykovanov <
notifications@github.com> wrote:

> In src/nodeid.cpp:
>
> >      {
> > -      return true;
> > +      return GetNamespaceIndex() < node.GetNamespaceIndex();
>
> Please add unittest for this change.
>
> —
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> <https://github.com/FreeOpcUa/opcua-mappings/pull/13/files#r13525329>.
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