[Insight-developers] Passing the Meta Data Dictionary through the pipeline

[Bill Lorensen]

Folks,

In repsonse to bug:
http://public.kitware.com/Bug/view.php?id=4625

I have a local checkout that passes the meta data dictionary through
the pipeline. I added a call to:
this->SetMetaDataDictionary(from->GetMetaDataDictionary())
in DataObject::CopyInformation()

I also looked at filters that implemented UpdateOutputInformation().
To those that did not call Superclass::UpdateOutputInformation() I
added the the SetMetaDataDictionary/GetMetaDataDictionary call to copy
the dictionary from the input to the output.

All tests are passing, but I need to add some new tests to make sure
that the dictionary is actually being passed.

Bill