ENH: EDF IPoints project commit.

VTK/Graphics:
  CMakeLists.txt
    Added build commands for vtkQuadraturePointInterpolator,vtkQuadraturePointsGenerator,vtkQuadratureSchemeDictionaryGenerator filters.

  vtkQuadraturePointInterpolator.h
  vtkQuadraturePointInterpolator.cxx
    Filter which makes use of InformationQuadratureSchemeDefinitionVectorKey to interpolate fields to quadrature points.

  vtkQuadraturePointsGenerator.h
  vtkQuadraturePointsGenerator.cxx
    Filter which makes use of InformationQuadratureSchemeDefinitionVectorKey abnd field data arrays generated by QuadraturePointInterpolator to generate a point set of quadrature points.

  vtkQuadraturePointsUtilities.hxx
    Code shared between QuadraturePointInterpolator and QuadraturePointGenerator.

  vtkQuadratureSchemeDictionaryGenerator.cxx
  vtkQuadratureSchemeDictionaryGenerator.h
    Convinience filter that adds a gerneric dictionary to point data arrays in undtructured grids. This is used for testing, and should not be used for application development.

VTK/GraphicsTesting/Cxx:
  CMakeLists.txt
  TestQuadraturePoints.cxx
    Added tests demonstarting the capability of the new QuadratureScheme* filters.

VTK/IO:
  CmakeLists.txt
    Removed build command for vtkXMLDataElement.

  vtkXMLUtilities.h
  vtkXMLUtilities.cxx
  vtkXMLDataParser.h
  vtkXMLDataParser.cxx
  vtkXMLMaterialParser.cxx
    Moved method vtkXMLDataElement::ReadXMLAttributes to vtkXMLUtilities::ReadElementFromAttributeArray to emliminate cyclic dependency.
    Moved method from vtkXMLDataElement::SeekInlineDataPosition to vtkXMLDataParser::SeekInlineDataPosition to emliminate cyclic dependency.
    Set vtkXMLDataParser to parse CharacterData as tags may use it even though vtkDataArray tags now have specialized methods for reading inline and appended data.

  vtkXMLReader.h
  vtkXMLReader.cxx
  vtkXMLWriter.h
  vtkXMLWriter.cxx
    Added methods to save/restore vtkInformation associated with vtkAbstractArray's to/from XML data files. We only handle a single vtkInformationKey type as handling more generally will require a more substantial investment to work around C++'s static typing in a platform independent way.

VTK/Common:
  CmakeLists.txt
    Added build command for vtkXMLDataElement
    Added build command for vtkInformationQuadratureSchemeDefinitionVectorKey

  vtkXMLDataElement.h
  vtkXMLDataElement.cxx
    Moved to Common from IO.
    Eliminated cyclic dependency with XML parsing classes.

  vtkInformationQuadratureSchemeDefinitionVectorKey.h
  vtkInformationQuadratureSchemeDefinitionVectorKey.cxx
    Replaced vtkInformationObjectBaseVectorKey with vtkInformationQuadratureSchemeDefinitionVectorKey to eliminate complications during de-serialization from XML due to C++'s static typing.

  vtkAbstractArray.h
  vtkAbstractArray.cxx
  vtkDataSetAttributes.h
  vtkDataSetAttributes.cxx
    Added support for vtkInformation to vtkDataSetAttributes copy methods.
    Changed vtkAbstractArray::SetInformation from protected to public.

  vtkMetaDataArray.h
  vtkMetaDataArray.cxx
    Removed from project. Use vtkInformation instead.

VTK/Rendering:
  vtkTesting.h
  vtkTesting.cxx
    Addded dataset comparison via average L2 norm. Cleaned up command tail processing code.